./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2c_insert_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 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_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2c_insert_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba --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 535caea86e22f289c2fcb0364594f5e7b1dfaabfa814e56099346e6a240c0067 --- 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-b5237d8 [2022-11-22 00:20:37,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 00:20:37,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 00:20:37,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 00:20:37,512 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 00:20:37,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 00:20:37,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 00:20:37,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 00:20:37,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 00:20:37,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 00:20:37,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 00:20:37,539 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 00:20:37,539 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 00:20:37,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 00:20:37,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 00:20:37,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 00:20:37,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 00:20:37,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 00:20:37,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 00:20:37,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 00:20:37,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 00:20:37,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 00:20:37,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 00:20:37,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 00:20:37,560 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 00:20:37,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 00:20:37,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 00:20:37,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 00:20:37,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 00:20:37,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 00:20:37,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 00:20:37,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 00:20:37,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 00:20:37,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 00:20:37,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 00:20:37,569 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 00:20:37,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 00:20:37,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 00:20:37,571 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 00:20:37,572 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 00:20:37,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 00:20:37,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-22 00:20:37,601 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 00:20:37,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 00:20:37,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 00:20:37,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 00:20:37,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 00:20:37,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 00:20:37,603 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 00:20:37,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 00:20:37,604 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 00:20:37,604 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 00:20:37,604 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 00:20:37,605 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 00:20:37,605 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 00:20:37,605 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 00:20:37,605 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 00:20:37,606 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 00:20:37,606 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 00:20:37,606 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 00:20:37,607 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 00:20:37,607 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 00:20:37,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 00:20:37,608 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 00:20:37,608 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 00:20:37,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 00:20:37,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 00:20:37,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 00:20:37,609 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 00:20:37,610 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 00:20:37,610 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 00:20:37,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 00:20:37,611 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 00:20:37,611 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 00:20:37,611 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 00:20:37,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 00:20:37,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 00:20:37,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:20:37,613 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 00:20:37,613 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 00:20:37,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 00:20:37,613 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 00:20:37,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 00:20:37,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 00:20:37,614 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_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 535caea86e22f289c2fcb0364594f5e7b1dfaabfa814e56099346e6a240c0067 [2022-11-22 00:20:37,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 00:20:37,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 00:20:37,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 00:20:38,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 00:20:38,000 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 00:20:38,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/list-simple/dll2c_insert_equal.i [2022-11-22 00:20:41,322 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 00:20:41,708 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 00:20:41,709 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/sv-benchmarks/c/list-simple/dll2c_insert_equal.i [2022-11-22 00:20:41,733 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/data/2d8bae8ac/38155603289a4ce0b8a79a9c43c78737/FLAG27db71dce [2022-11-22 00:20:41,759 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/data/2d8bae8ac/38155603289a4ce0b8a79a9c43c78737 [2022-11-22 00:20:41,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 00:20:41,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 00:20:41,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 00:20:41,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 00:20:41,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 00:20:41,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:20:41" (1/1) ... [2022-11-22 00:20:41,780 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db1148e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:41, skipping insertion in model container [2022-11-22 00:20:41,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:20:41" (1/1) ... [2022-11-22 00:20:41,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 00:20:41,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 00:20:42,238 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_59769d7e-c70e-44df-9dbd-96f88d2dda62/sv-benchmarks/c/list-simple/dll2c_insert_equal.i[24877,24890] [2022-11-22 00:20:42,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:20:42,251 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 00:20:42,346 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_59769d7e-c70e-44df-9dbd-96f88d2dda62/sv-benchmarks/c/list-simple/dll2c_insert_equal.i[24877,24890] [2022-11-22 00:20:42,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 00:20:42,406 INFO L208 MainTranslator]: Completed translation [2022-11-22 00:20:42,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42 WrapperNode [2022-11-22 00:20:42,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 00:20:42,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 00:20:42,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 00:20:42,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 00:20:42,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,490 INFO L138 Inliner]: procedures = 127, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2022-11-22 00:20:42,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 00:20:42,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 00:20:42,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 00:20:42,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 00:20:42,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,544 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 00:20:42,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 00:20:42,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 00:20:42,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 00:20:42,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (1/1) ... [2022-11-22 00:20:42,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 00:20:42,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:20:42,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 00:20:42,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 00:20:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 00:20:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 00:20:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-11-22 00:20:42,658 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-11-22 00:20:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 00:20:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 00:20:42,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 00:20:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 00:20:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 00:20:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 00:20:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 00:20:42,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 00:20:42,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 00:20:42,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 00:20:42,892 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 00:20:42,894 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 00:20:43,699 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 00:20:43,764 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 00:20:43,764 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 00:20:43,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:20:43 BoogieIcfgContainer [2022-11-22 00:20:43,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 00:20:43,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 00:20:43,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 00:20:43,776 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 00:20:43,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:20:41" (1/3) ... [2022-11-22 00:20:43,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cf653c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:20:43, skipping insertion in model container [2022-11-22 00:20:43,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:20:42" (2/3) ... [2022-11-22 00:20:43,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79cf653c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:20:43, skipping insertion in model container [2022-11-22 00:20:43,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:20:43" (3/3) ... [2022-11-22 00:20:43,779 INFO L112 eAbstractionObserver]: Analyzing ICFG dll2c_insert_equal.i [2022-11-22 00:20:43,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 00:20:43,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2022-11-22 00:20:43,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 00:20:43,870 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;@2c94c6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 00:20:43,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2022-11-22 00:20:43,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 60 states have (on average 2.4) internal successors, (144), 132 states have internal predecessors, (144), 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) [2022-11-22 00:20:43,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:20:43,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:43,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:20:43,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:20:43,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:43,889 INFO L85 PathProgramCache]: Analyzing trace with hash 264846151, now seen corresponding path program 1 times [2022-11-22 00:20:43,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:43,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390496947] [2022-11-22 00:20:43,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:43,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:44,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:20:44,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:44,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390496947] [2022-11-22 00:20:44,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390496947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:20:44,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:20:44,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:20:44,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241326936] [2022-11-22 00:20:44,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:20:44,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:20:44,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:20:44,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:20:44,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:20:44,400 INFO L87 Difference]: Start difference. First operand has 137 states, 60 states have (on average 2.4) internal successors, (144), 132 states have internal predecessors, (144), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-22 00:20:44,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:20:44,713 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2022-11-22 00:20:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:20:44,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2022-11-22 00:20:44,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:20:44,735 INFO L225 Difference]: With dead ends: 134 [2022-11-22 00:20:44,736 INFO L226 Difference]: Without dead ends: 132 [2022-11-22 00:20:44,738 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 [2022-11-22 00:20:44,742 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 8 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:20:44,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 189 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:20:44,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-22 00:20:44,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2022-11-22 00:20:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 59 states have (on average 2.305084745762712) internal successors, (136), 127 states have internal predecessors, (136), 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) [2022-11-22 00:20:44,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 142 transitions. [2022-11-22 00:20:44,791 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 142 transitions. Word has length 5 [2022-11-22 00:20:44,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:20:44,792 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 142 transitions. [2022-11-22 00:20:44,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-22 00:20:44,792 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 142 transitions. [2022-11-22 00:20:44,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 00:20:44,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:44,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 00:20:44,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 00:20:44,793 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:20:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:44,794 INFO L85 PathProgramCache]: Analyzing trace with hash 264846150, now seen corresponding path program 1 times [2022-11-22 00:20:44,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:44,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661386283] [2022-11-22 00:20:44,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:44,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:20:44,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:44,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661386283] [2022-11-22 00:20:44,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661386283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:20:44,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:20:44,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 00:20:44,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858632786] [2022-11-22 00:20:44,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:20:44,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:20:44,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:20:44,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:20:44,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:20:44,861 INFO L87 Difference]: Start difference. First operand 132 states and 142 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-22 00:20:45,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:20:45,073 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2022-11-22 00:20:45,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:20:45,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 5 [2022-11-22 00:20:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:20:45,079 INFO L225 Difference]: With dead ends: 129 [2022-11-22 00:20:45,081 INFO L226 Difference]: Without dead ends: 129 [2022-11-22 00:20:45,081 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 [2022-11-22 00:20:45,083 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 3 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:20:45,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 182 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:20:45,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-22 00:20:45,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2022-11-22 00:20:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 59 states have (on average 2.2542372881355934) internal successors, (133), 124 states have internal predecessors, (133), 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) [2022-11-22 00:20:45,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2022-11-22 00:20:45,105 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 5 [2022-11-22 00:20:45,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:20:45,106 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2022-11-22 00:20:45,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-22 00:20:45,106 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2022-11-22 00:20:45,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 00:20:45,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:45,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:20:45,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 00:20:45,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:20:45,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:45,108 INFO L85 PathProgramCache]: Analyzing trace with hash 883355377, now seen corresponding path program 1 times [2022-11-22 00:20:45,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:45,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822706492] [2022-11-22 00:20:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:45,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:45,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:20:45,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:45,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822706492] [2022-11-22 00:20:45,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822706492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:20:45,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:20:45,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:20:45,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103597933] [2022-11-22 00:20:45,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:20:45,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:20:45,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:20:45,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:20:45,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:20:45,316 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-11-22 00:20:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:20:45,384 INFO L93 Difference]: Finished difference Result 140 states and 152 transitions. [2022-11-22 00:20:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:20:45,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 [2022-11-22 00:20:45,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:20:45,393 INFO L225 Difference]: With dead ends: 140 [2022-11-22 00:20:45,394 INFO L226 Difference]: Without dead ends: 140 [2022-11-22 00:20:45,394 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 [2022-11-22 00:20:45,397 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 10 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:20:45,399 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 239 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:20:45,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-22 00:20:45,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2022-11-22 00:20:45,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 60 states have (on average 2.2333333333333334) internal successors, (134), 125 states have internal predecessors, (134), 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) [2022-11-22 00:20:45,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2022-11-22 00:20:45,424 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 11 [2022-11-22 00:20:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:20:45,425 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2022-11-22 00:20:45,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2022-11-22 00:20:45,426 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2022-11-22 00:20:45,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 00:20:45,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:45,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:20:45,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 00:20:45,427 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:20:45,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:45,429 INFO L85 PathProgramCache]: Analyzing trace with hash 162987860, now seen corresponding path program 1 times [2022-11-22 00:20:45,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:45,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842581993] [2022-11-22 00:20:45,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:45,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:45,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 00:20:45,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:45,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842581993] [2022-11-22 00:20:45,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842581993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:20:45,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:20:45,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:20:45,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022472977] [2022-11-22 00:20:45,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:20:45,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:20:45,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:20:45,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:20:45,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:20:45,640 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-11-22 00:20:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:20:45,978 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2022-11-22 00:20:45,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:20:45,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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 19 [2022-11-22 00:20:45,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:20:45,981 INFO L225 Difference]: With dead ends: 130 [2022-11-22 00:20:45,981 INFO L226 Difference]: Without dead ends: 130 [2022-11-22 00:20:45,982 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 [2022-11-22 00:20:45,983 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 18 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:20:45,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 346 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:20:45,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-22 00:20:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2022-11-22 00:20:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 60 states have (on average 2.216666666666667) internal successors, (133), 124 states have internal predecessors, (133), 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) [2022-11-22 00:20:46,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 139 transitions. [2022-11-22 00:20:46,004 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 139 transitions. Word has length 19 [2022-11-22 00:20:46,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:20:46,005 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 139 transitions. [2022-11-22 00:20:46,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-11-22 00:20:46,005 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 139 transitions. [2022-11-22 00:20:46,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 00:20:46,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:46,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:20:46,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 00:20:46,007 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:20:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash 162987861, now seen corresponding path program 1 times [2022-11-22 00:20:46,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:46,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251789724] [2022-11-22 00:20:46,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:46,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:20:46,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:46,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251789724] [2022-11-22 00:20:46,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251789724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:20:46,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:20:46,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:20:46,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778009620] [2022-11-22 00:20:46,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:20:46,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:20:46,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:20:46,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:20:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:20:46,300 INFO L87 Difference]: Start difference. First operand 129 states and 139 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-11-22 00:20:46,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:20:46,626 INFO L93 Difference]: Finished difference Result 129 states and 140 transitions. [2022-11-22 00:20:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:20:46,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 19 [2022-11-22 00:20:46,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:20:46,627 INFO L225 Difference]: With dead ends: 129 [2022-11-22 00:20:46,627 INFO L226 Difference]: Without dead ends: 129 [2022-11-22 00:20:46,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:20:46,629 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 16 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:20:46,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 370 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:20:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-22 00:20:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 128. [2022-11-22 00:20:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 60 states have (on average 2.2) internal successors, (132), 123 states have internal predecessors, (132), 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) [2022-11-22 00:20:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 138 transitions. [2022-11-22 00:20:46,636 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 138 transitions. Word has length 19 [2022-11-22 00:20:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:20:46,636 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 138 transitions. [2022-11-22 00:20:46,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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) [2022-11-22 00:20:46,636 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 138 transitions. [2022-11-22 00:20:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 00:20:46,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:46,637 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:20:46,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 00:20:46,638 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:20:46,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:46,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2012510517, now seen corresponding path program 1 times [2022-11-22 00:20:46,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:46,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167141989] [2022-11-22 00:20:46,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:46,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:46,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:20:47,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:47,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167141989] [2022-11-22 00:20:47,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167141989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:20:47,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405386581] [2022-11-22 00:20:47,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:47,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:20:47,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:20:47,023 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:20:47,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 00:20:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:47,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-22 00:20:47,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:20:47,223 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 [2022-11-22 00:20:47,298 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_212 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_212))) is different from true [2022-11-22 00:20:47,328 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_212 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_212))) is different from true [2022-11-22 00:20:47,357 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 00:20:47,358 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 [2022-11-22 00:20:47,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2022-11-22 00:20:47,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:20:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:20:47,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405386581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:20:47,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [107900136] [2022-11-22 00:20:47,920 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 00:20:47,920 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:20:47,925 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:20:47,931 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:20:47,931 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:20:48,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,010 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 [2022-11-22 00:20:48,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,069 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 [2022-11-22 00:20:48,094 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 [2022-11-22 00:20:48,100 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 [2022-11-22 00:20:48,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:20:48,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:20:48,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:20:48,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,140 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 21 treesize of output 20 [2022-11-22 00:20:48,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,153 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 21 treesize of output 20 [2022-11-22 00:20:48,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:20:48,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:20:48,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:20:48,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:20:48,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,267 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 [2022-11-22 00:20:48,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,314 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 [2022-11-22 00:20:48,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:48,373 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 [2022-11-22 00:20:48,782 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:20:48,783 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 240 treesize of output 229 [2022-11-22 00:20:49,124 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 [2022-11-22 00:20:49,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:20:49,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:20:49,174 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 [2022-11-22 00:20:49,194 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 [2022-11-22 00:20:49,212 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:20:49,214 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:20:49,364 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:20:49,365 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 240 treesize of output 229 [2022-11-22 00:20:49,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:20:49,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:20:49,713 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 [2022-11-22 00:20:49,726 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 [2022-11-22 00:20:49,738 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 [2022-11-22 00:20:49,757 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:20:49,760 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:20:49,764 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:20:49,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 11 [2022-11-22 00:20:49,874 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 26 treesize of output 21 [2022-11-22 00:20:49,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:20:50,025 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:20:50,026 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 240 treesize of output 229 [2022-11-22 00:20:50,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:50,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:50,212 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 [2022-11-22 00:20:50,237 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 90 for LOIs [2022-11-22 00:20:50,767 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:20:57,046 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1614#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#s~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 4) 0) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 4) 0) (not (= |ULTIMATE.start_dll_circular_create_~new_head~0#1.base| 0)) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= |ULTIMATE.start_dll_circular_create_~data#1| |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_create_#in~len#1| |ULTIMATE.start_main_~len~0#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (< |ULTIMATE.start_dll_circular_create_~head~0#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_dll_circular_create_#in~len#1| |ULTIMATE.start_dll_circular_create_~len#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~data~0#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 8) |ULTIMATE.start_dll_circular_create_~data#1|) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#s~0#1.base|) 0) (= (select |#length| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 12) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (not (= |ULTIMATE.start_dll_circular_create_~head~0#1.base| 0)) (< |ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_dll_circular_create_~head~0#1.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (= |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (not (= (select |#valid| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) 1)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:20:57,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:20:57,047 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:20:57,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 18 [2022-11-22 00:20:57,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15158634] [2022-11-22 00:20:57,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:20:57,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 00:20:57,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:20:57,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 00:20:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=694, Unknown=2, NotChecked=110, Total=930 [2022-11-22 00:20:57,049 INFO L87 Difference]: Start difference. First operand 128 states and 138 transitions. Second operand has 19 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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) [2022-11-22 00:20:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:20:57,709 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2022-11-22 00:20:57,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 00:20:57,710 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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 21 [2022-11-22 00:20:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:20:57,712 INFO L225 Difference]: With dead ends: 152 [2022-11-22 00:20:57,712 INFO L226 Difference]: Without dead ends: 152 [2022-11-22 00:20:57,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=135, Invalid=741, Unknown=2, NotChecked=114, Total=992 [2022-11-22 00:20:57,713 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 348 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:20:57,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 476 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 711 Invalid, 0 Unknown, 271 Unchecked, 0.6s Time] [2022-11-22 00:20:57,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-22 00:20:57,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 133. [2022-11-22 00:20:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 64 states have (on average 2.15625) internal successors, (138), 127 states have internal predecessors, (138), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:20:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2022-11-22 00:20:57,730 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 21 [2022-11-22 00:20:57,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:20:57,730 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2022-11-22 00:20:57,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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) [2022-11-22 00:20:57,731 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2022-11-22 00:20:57,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 00:20:57,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:20:57,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:20:57,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 00:20:57,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 00:20:57,940 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:20:57,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:20:57,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2012510518, now seen corresponding path program 1 times [2022-11-22 00:20:57,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:20:57,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047068142] [2022-11-22 00:20:57,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:57,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:20:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:20:58,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:20:58,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047068142] [2022-11-22 00:20:58,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047068142] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:20:58,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279939953] [2022-11-22 00:20:58,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:20:58,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:20:58,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:20:58,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:20:58,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 00:20:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:20:58,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-22 00:20:58,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:20:58,548 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 [2022-11-22 00:20:58,554 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 [2022-11-22 00:20:58,778 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:20:58,779 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 [2022-11-22 00:20:58,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2022-11-22 00:20:58,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:20:58,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:20:59,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279939953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:20:59,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [29198678] [2022-11-22 00:20:59,620 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 00:20:59,620 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:20:59,621 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:20:59,621 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:20:59,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:20:59,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,657 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 [2022-11-22 00:20:59,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,699 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 [2022-11-22 00:20:59,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 00:20:59,720 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 [2022-11-22 00:20:59,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:20:59,735 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 [2022-11-22 00:20:59,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:20:59,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:20:59,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:20:59,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,769 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 21 treesize of output 20 [2022-11-22 00:20:59,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:20:59,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:20:59,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:20:59,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,836 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 [2022-11-22 00:20:59,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,869 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 [2022-11-22 00:20:59,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,915 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 [2022-11-22 00:20:59,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:20:59,998 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:20:59,999 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 [2022-11-22 00:21:00,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:00,051 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 [2022-11-22 00:21:00,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:00,088 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 [2022-11-22 00:21:00,103 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 [2022-11-22 00:21:00,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:00,142 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:00,143 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 [2022-11-22 00:21:00,191 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 [2022-11-22 00:21:00,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:00,219 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 [2022-11-22 00:21:00,229 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 [2022-11-22 00:21:00,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:00,332 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 26 treesize of output 21 [2022-11-22 00:21:00,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:21:00,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 11 [2022-11-22 00:21:00,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:00,430 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:00,430 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 [2022-11-22 00:21:00,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:00,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:00,456 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 [2022-11-22 00:21:00,471 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 94 for LOIs [2022-11-22 00:21:00,920 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:21:07,072 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2009#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#s~0#1.base|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 4) 0) (= (select |#valid| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 1) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 4) 0) (not (= |ULTIMATE.start_dll_circular_create_~new_head~0#1.base| 0)) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= (select |ULTIMATE.start_main_old_#valid#1| 1) 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select |ULTIMATE.start_main_old_#valid#1| 2) 1) (= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (= |ULTIMATE.start_dll_circular_create_~data#1| |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_create_#in~len#1| |ULTIMATE.start_main_~len~0#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (< |ULTIMATE.start_dll_circular_create_~head~0#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_dll_circular_create_#in~len#1| |ULTIMATE.start_dll_circular_create_~len#1|) (< (select |#length| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 8)) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset|) |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (select |ULTIMATE.start_main_old_#valid#1| 0) 0) (= |ULTIMATE.start_main_~data~0#1| 1) (= (select (select |#memory_int| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 8) |ULTIMATE.start_dll_circular_create_~data#1|) (= (select |ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~#s~0#1.base|) 0) (= (select |#length| |ULTIMATE.start_dll_circular_create_~new_head~0#1.base|) 12) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (not (= |ULTIMATE.start_dll_circular_create_~head~0#1.base| 0)) (< |ULTIMATE.start_dll_circular_create_~new_head~0#1.base| |#StackHeapBarrier|) (= |ULTIMATE.start_dll_circular_create_~head~0#1.base| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (= |ULTIMATE.start_dll_circular_create_~new_head~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 00:21:07,073 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:21:07,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:21:07,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-22 00:21:07,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999880100] [2022-11-22 00:21:07,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:21:07,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 00:21:07,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:21:07,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 00:21:07,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-11-22 00:21:07,075 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 18 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-22 00:21:08,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:21:08,089 INFO L93 Difference]: Finished difference Result 135 states and 147 transitions. [2022-11-22 00:21:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:21:08,090 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 2 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 21 [2022-11-22 00:21:08,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:21:08,091 INFO L225 Difference]: With dead ends: 135 [2022-11-22 00:21:08,091 INFO L226 Difference]: Without dead ends: 135 [2022-11-22 00:21:08,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 00:21:08,093 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 12 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 00:21:08,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 600 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 00:21:08,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-22 00:21:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2022-11-22 00:21:08,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 64 states have (on average 2.140625) internal successors, (137), 127 states have internal predecessors, (137), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:21:08,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2022-11-22 00:21:08,100 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 21 [2022-11-22 00:21:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:21:08,101 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2022-11-22 00:21:08,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-22 00:21:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2022-11-22 00:21:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 00:21:08,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:21:08,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:21:08,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 00:21:08,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 00:21:08,309 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:21:08,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:21:08,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1287485459, now seen corresponding path program 1 times [2022-11-22 00:21:08,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:21:08,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22713916] [2022-11-22 00:21:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:08,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:21:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:21:08,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:21:08,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22713916] [2022-11-22 00:21:08,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22713916] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:21:08,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090930980] [2022-11-22 00:21:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:08,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:21:08,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:21:08,442 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:21:08,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 00:21:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:08,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 00:21:08,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:21:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:21:08,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:21:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:21:08,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090930980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:21:08,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1073202435] [2022-11-22 00:21:08,662 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 00:21:08,662 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:21:08,662 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:21:08,662 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:21:08,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:21:08,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,689 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 [2022-11-22 00:21:08,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,724 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 [2022-11-22 00:21:08,738 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 [2022-11-22 00:21:08,742 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 [2022-11-22 00:21:08,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:08,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:21:08,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:08,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:08,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:08,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:08,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:08,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:08,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:08,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,843 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 [2022-11-22 00:21:08,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,875 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 [2022-11-22 00:21:08,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:08,916 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 [2022-11-22 00:21:09,114 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:21:09,114 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 240 treesize of output 229 [2022-11-22 00:21:09,321 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 [2022-11-22 00:21:09,331 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 [2022-11-22 00:21:09,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:09,354 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 5 treesize of output 3 [2022-11-22 00:21:09,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:09,380 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:09,383 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:09,471 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:21:09,472 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 240 treesize of output 229 [2022-11-22 00:21:09,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:09,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:21:09,781 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 [2022-11-22 00:21:09,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:09,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:21:09,807 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 [2022-11-22 00:21:09,817 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 9 treesize of output 3 [2022-11-22 00:21:09,833 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:09,835 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:09,837 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:09,840 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:09,903 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 26 treesize of output 21 [2022-11-22 00:21:09,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 11 [2022-11-22 00:21:09,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:21:10,056 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:21:10,057 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 240 treesize of output 229 [2022-11-22 00:21:10,349 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 [2022-11-22 00:21:10,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:10,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:10,383 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 [2022-11-22 00:21:10,393 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 [2022-11-22 00:21:10,409 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:10,411 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:10,414 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:10,509 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:21:10,509 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 240 treesize of output 229 [2022-11-22 00:21:10,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:10,756 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 [2022-11-22 00:21:10,767 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 [2022-11-22 00:21:10,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:10,792 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 [2022-11-22 00:21:10,810 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:10,812 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:10,816 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:10,942 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:10,943 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-11-22 00:21:10,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:10,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:10,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:10,963 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-11-22 00:21:10,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:10,981 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:10,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:10,987 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-11-22 00:21:11,127 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:21:11,127 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 240 treesize of output 229 [2022-11-22 00:21:11,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:11,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:11,378 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 [2022-11-22 00:21:11,395 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 90 for LOIs [2022-11-22 00:21:11,855 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:21:17,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1073202435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:21:17,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:21:17,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [6, 6, 6] total 17 [2022-11-22 00:21:17,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094378768] [2022-11-22 00:21:17,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:21:17,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 00:21:17,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:21:17,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 00:21:17,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-22 00:21:17,676 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-11-22 00:21:22,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:21:22,038 INFO L93 Difference]: Finished difference Result 139 states and 149 transitions. [2022-11-22 00:21:22,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:21:22,038 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 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 23 [2022-11-22 00:21:22,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:21:22,039 INFO L225 Difference]: With dead ends: 139 [2022-11-22 00:21:22,039 INFO L226 Difference]: Without dead ends: 139 [2022-11-22 00:21:22,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-11-22 00:21:22,040 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 2 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 1 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:21:22,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 357 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1280 Invalid, 13 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 00:21:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-22 00:21:22,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-11-22 00:21:22,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 69 states have (on average 2.0434782608695654) internal successors, (141), 132 states have internal predecessors, (141), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:21:22,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 149 transitions. [2022-11-22 00:21:22,046 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 149 transitions. Word has length 23 [2022-11-22 00:21:22,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:21:22,047 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 149 transitions. [2022-11-22 00:21:22,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-11-22 00:21:22,047 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 149 transitions. [2022-11-22 00:21:22,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 00:21:22,048 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:21:22,048 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:21:22,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 00:21:22,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:21:22,249 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:21:22,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:21:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1252332262, now seen corresponding path program 1 times [2022-11-22 00:21:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:21:22,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601681715] [2022-11-22 00:21:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:21:22,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 00:21:22,324 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:21:22,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601681715] [2022-11-22 00:21:22,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601681715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:21:22,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167811909] [2022-11-22 00:21:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:22,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:21:22,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:21:22,331 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:21:22,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 00:21:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:22,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-22 00:21:22,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:21:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 00:21:22,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:21:22,498 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-22 00:21:22,498 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 12 treesize of output 11 [2022-11-22 00:21:22,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 00:21:22,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167811909] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:21:22,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2051169966] [2022-11-22 00:21:22,524 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-22 00:21:22,524 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:21:22,525 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:21:22,525 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:21:22,525 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:21:22,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,548 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 [2022-11-22 00:21:22,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,580 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 [2022-11-22 00:21:22,593 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 [2022-11-22 00:21:22,597 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 [2022-11-22 00:21:22,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:21:22,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:22,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:21:22,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 00:21:22,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:22,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:22,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:21:22,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:22,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:22,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,688 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 [2022-11-22 00:21:22,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,713 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 [2022-11-22 00:21:22,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,743 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 [2022-11-22 00:21:22,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,832 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:22,832 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 [2022-11-22 00:21:22,863 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 [2022-11-22 00:21:22,874 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 [2022-11-22 00:21:22,882 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 [2022-11-22 00:21:22,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:22,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:22,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:22,937 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:22,937 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 [2022-11-22 00:21:22,972 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 [2022-11-22 00:21:22,986 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 [2022-11-22 00:21:22,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:23,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:21:23,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:23,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-22 00:21:23,097 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 26 treesize of output 21 [2022-11-22 00:21:23,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:21:23,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:23,172 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:21:23,173 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 28 treesize of output 34 [2022-11-22 00:21:23,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:23,206 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:21:23,207 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 28 treesize of output 30 [2022-11-22 00:21:23,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:23,226 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 27 treesize of output 11 [2022-11-22 00:21:23,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:23,277 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 27 treesize of output 11 [2022-11-22 00:21:23,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:23,301 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:21:23,301 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 28 treesize of output 34 [2022-11-22 00:21:23,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:23,330 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:21:23,330 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 28 treesize of output 30 [2022-11-22 00:21:23,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:23,430 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:23,431 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 [2022-11-22 00:21:23,465 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 [2022-11-22 00:21:23,483 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 [2022-11-22 00:21:23,493 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 [2022-11-22 00:21:23,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:23,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:23,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:23,544 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:23,545 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 [2022-11-22 00:21:23,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:23,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:21:23,596 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 [2022-11-22 00:21:23,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:23,615 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 [2022-11-22 00:21:23,692 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 26 treesize of output 21 [2022-11-22 00:21:23,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:21:23,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 11 [2022-11-22 00:21:23,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:23,746 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:23,746 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 [2022-11-22 00:21:23,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:23,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:23,767 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 [2022-11-22 00:21:23,778 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 94 for LOIs [2022-11-22 00:21:24,128 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:21:30,037 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2869#(and (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= |#NULL.offset| 0) (not (= (select |#valid| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) 1)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-22 00:21:30,037 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:21:30,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:21:30,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2022-11-22 00:21:30,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338757993] [2022-11-22 00:21:30,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:21:30,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:21:30,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:21:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:21:30,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=319, Unknown=3, NotChecked=0, Total=380 [2022-11-22 00:21:30,040 INFO L87 Difference]: Start difference. First operand 139 states and 149 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:21:30,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:21:30,291 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2022-11-22 00:21:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:21:30,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-22 00:21:30,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:21:30,293 INFO L225 Difference]: With dead ends: 144 [2022-11-22 00:21:30,293 INFO L226 Difference]: Without dead ends: 144 [2022-11-22 00:21:30,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=72, Invalid=387, Unknown=3, NotChecked=0, Total=462 [2022-11-22 00:21:30,294 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 8 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:21:30,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 342 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:21:30,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-22 00:21:30,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2022-11-22 00:21:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 72 states have (on average 2.0277777777777777) internal successors, (146), 135 states have internal predecessors, (146), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:21:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 154 transitions. [2022-11-22 00:21:30,301 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 154 transitions. Word has length 24 [2022-11-22 00:21:30,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:21:30,301 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 154 transitions. [2022-11-22 00:21:30,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:21:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 154 transitions. [2022-11-22 00:21:30,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 00:21:30,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:21:30,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:21:30,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 00:21:30,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:21:30,516 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:21:30,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:21:30,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1252332263, now seen corresponding path program 1 times [2022-11-22 00:21:30,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:21:30,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914814451] [2022-11-22 00:21:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:30,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:21:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:21:30,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:21:30,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914814451] [2022-11-22 00:21:30,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914814451] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:21:30,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087757955] [2022-11-22 00:21:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:30,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:21:30,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:21:30,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:21:30,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 00:21:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:30,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-22 00:21:30,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:21:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:21:30,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:21:31,008 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:21:31,009 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 20 treesize of output 24 [2022-11-22 00:21:31,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:21:31,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087757955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:21:31,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [530505758] [2022-11-22 00:21:31,144 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-11-22 00:21:31,144 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:21:31,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:21:31,145 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:21:31,145 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:21:31,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,167 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 [2022-11-22 00:21:31,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,191 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 [2022-11-22 00:21:31,202 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 [2022-11-22 00:21:31,205 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 [2022-11-22 00:21:31,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:31,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:31,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:21:31,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:31,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:31,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,245 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 21 treesize of output 20 [2022-11-22 00:21:31,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:31,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:31,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:31,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,300 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 [2022-11-22 00:21:31,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,327 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 [2022-11-22 00:21:31,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,356 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 [2022-11-22 00:21:31,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,420 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:31,420 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 [2022-11-22 00:21:31,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:21:31,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:31,477 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 [2022-11-22 00:21:31,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:31,500 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 [2022-11-22 00:21:31,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,527 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:31,528 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 [2022-11-22 00:21:31,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:31,585 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 [2022-11-22 00:21:31,594 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 [2022-11-22 00:21:31,603 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 [2022-11-22 00:21:31,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:31,726 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:31,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,731 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-11-22 00:21:31,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:31,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:31,752 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-11-22 00:21:31,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:31,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:31,772 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-11-22 00:21:31,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,897 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 260 treesize of output 238 [2022-11-22 00:21:31,914 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:31,927 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:21:31,928 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 261 treesize of output 257 [2022-11-22 00:21:31,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:31,946 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:31,961 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:21:31,961 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 261 treesize of output 261 [2022-11-22 00:21:32,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:32,205 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 260 treesize of output 238 [2022-11-22 00:21:32,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:32,232 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:21:32,233 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 261 treesize of output 257 [2022-11-22 00:21:32,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:32,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:32,263 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:21:32,263 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 261 treesize of output 261 [2022-11-22 00:21:32,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:32,425 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:32,425 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 [2022-11-22 00:21:32,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:32,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:32,491 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 [2022-11-22 00:21:32,503 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 [2022-11-22 00:21:32,512 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 [2022-11-22 00:21:32,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:32,544 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:32,544 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 [2022-11-22 00:21:32,574 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 [2022-11-22 00:21:32,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:32,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:32,606 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 [2022-11-22 00:21:32,616 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 [2022-11-22 00:21:32,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:21:32,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:21:32,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:32,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:32,745 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:32,745 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 [2022-11-22 00:21:32,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:32,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:32,769 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 [2022-11-22 00:21:32,782 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 94 for LOIs [2022-11-22 00:21:33,150 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:21:39,332 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3327#(and (< (select |#length| |ULTIMATE.start_dll_circular_create_~last~0#1.base|) (+ |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 4)) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-22 00:21:39,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:21:39,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:21:39,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-11-22 00:21:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159634947] [2022-11-22 00:21:39,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:21:39,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 00:21:39,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:21:39,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 00:21:39,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2022-11-22 00:21:39,334 INFO L87 Difference]: Start difference. First operand 142 states and 154 transitions. Second operand has 15 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 13 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-22 00:21:39,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:21:39,656 INFO L93 Difference]: Finished difference Result 147 states and 160 transitions. [2022-11-22 00:21:39,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:21:39,657 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 13 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 24 [2022-11-22 00:21:39,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:21:39,658 INFO L225 Difference]: With dead ends: 147 [2022-11-22 00:21:39,658 INFO L226 Difference]: Without dead ends: 147 [2022-11-22 00:21:39,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 00:21:39,659 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 23 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:21:39,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 804 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:21:39,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-22 00:21:39,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2022-11-22 00:21:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 72 states have (on average 2.013888888888889) internal successors, (145), 135 states have internal predecessors, (145), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:21:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 153 transitions. [2022-11-22 00:21:39,666 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 153 transitions. Word has length 24 [2022-11-22 00:21:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:21:39,666 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 153 transitions. [2022-11-22 00:21:39,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 13 states have internal predecessors, (43), 4 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-22 00:21:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 153 transitions. [2022-11-22 00:21:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-22 00:21:39,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:21:39,669 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:21:39,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 00:21:39,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 00:21:39,876 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:21:39,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:21:39,876 INFO L85 PathProgramCache]: Analyzing trace with hash 167594463, now seen corresponding path program 1 times [2022-11-22 00:21:39,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:21:39,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480949635] [2022-11-22 00:21:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:39,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:21:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 00:21:39,988 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:21:39,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480949635] [2022-11-22 00:21:39,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480949635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:21:39,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:21:39,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:21:39,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133781367] [2022-11-22 00:21:39,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:21:39,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:21:39,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:21:39,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:21:39,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:21:39,991 INFO L87 Difference]: Start difference. First operand 142 states and 153 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-22 00:21:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:21:40,269 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2022-11-22 00:21:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:21:40,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 25 [2022-11-22 00:21:40,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:21:40,270 INFO L225 Difference]: With dead ends: 142 [2022-11-22 00:21:40,270 INFO L226 Difference]: Without dead ends: 142 [2022-11-22 00:21:40,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:21:40,271 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 19 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:21:40,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 395 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:21:40,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-22 00:21:40,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 141. [2022-11-22 00:21:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 72 states have (on average 2.0) internal successors, (144), 134 states have internal predecessors, (144), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:21:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 152 transitions. [2022-11-22 00:21:40,276 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 152 transitions. Word has length 25 [2022-11-22 00:21:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:21:40,277 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 152 transitions. [2022-11-22 00:21:40,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-22 00:21:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 152 transitions. [2022-11-22 00:21:40,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-22 00:21:40,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:21:40,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:21:40,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 00:21:40,278 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:21:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:21:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash 167594464, now seen corresponding path program 1 times [2022-11-22 00:21:40,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:21:40,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413896832] [2022-11-22 00:21:40,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:21:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:40,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:21:40,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:21:40,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413896832] [2022-11-22 00:21:40,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413896832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:21:40,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:21:40,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 00:21:40,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039522269] [2022-11-22 00:21:40,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:21:40,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:21:40,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:21:40,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:21:40,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:21:40,491 INFO L87 Difference]: Start difference. First operand 141 states and 152 transitions. Second operand has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-22 00:21:40,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:21:40,791 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2022-11-22 00:21:40,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:21:40,791 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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 25 [2022-11-22 00:21:40,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:21:40,792 INFO L225 Difference]: With dead ends: 140 [2022-11-22 00:21:40,792 INFO L226 Difference]: Without dead ends: 140 [2022-11-22 00:21:40,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 00:21:40,793 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 15 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 00:21:40,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 425 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 00:21:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-22 00:21:40,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-22 00:21:40,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 72 states have (on average 1.9861111111111112) internal successors, (143), 133 states have internal predecessors, (143), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:21:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2022-11-22 00:21:40,798 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 25 [2022-11-22 00:21:40,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:21:40,798 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2022-11-22 00:21:40,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 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) [2022-11-22 00:21:40,798 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2022-11-22 00:21:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-22 00:21:40,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:21:40,800 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:21:40,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 00:21:40,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:21:40,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:21:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1568588154, now seen corresponding path program 1 times [2022-11-22 00:21:40,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:21:40,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731901341] [2022-11-22 00:21:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:40,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:21:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 00:21:41,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:21:41,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731901341] [2022-11-22 00:21:41,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731901341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:21:41,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107106199] [2022-11-22 00:21:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:41,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:21:41,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:21:41,347 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:21:41,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 00:21:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:41,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-22 00:21:41,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:21:41,536 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 [2022-11-22 00:21:41,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:21:41,562 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_924 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_924))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-22 00:21:41,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:41,599 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 [2022-11-22 00:21:41,611 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_925 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_925))) is different from true [2022-11-22 00:21:41,621 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_925 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_925))) is different from true [2022-11-22 00:21:41,636 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 00:21:41,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-22 00:21:41,702 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 [2022-11-22 00:21:41,725 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:21:41,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 00:21:41,743 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 15 not checked. [2022-11-22 00:21:41,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:21:42,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107106199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:21:42,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [765154846] [2022-11-22 00:21:42,180 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-22 00:21:42,180 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:21:42,180 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:21:42,181 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:21:42,181 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:21:42,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,203 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 [2022-11-22 00:21:42,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,229 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 [2022-11-22 00:21:42,240 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 [2022-11-22 00:21:42,244 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 [2022-11-22 00:21:42,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:21:42,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:42,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:21:42,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:42,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:42,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:42,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:42,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:42,307 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 13 treesize of output 9 [2022-11-22 00:21:42,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,332 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 [2022-11-22 00:21:42,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,359 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 [2022-11-22 00:21:42,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,391 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 [2022-11-22 00:21:42,562 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:21:42,563 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 240 treesize of output 229 [2022-11-22 00:21:42,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-22 00:21:42,789 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 9 treesize of output 3 [2022-11-22 00:21:42,799 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 [2022-11-22 00:21:42,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:42,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-22 00:21:42,835 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 [2022-11-22 00:21:42,847 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:42,851 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:42,853 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:42,934 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:21:42,935 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 240 treesize of output 229 [2022-11-22 00:21:43,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:43,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:21:43,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:43,203 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 [2022-11-22 00:21:43,214 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 [2022-11-22 00:21:43,231 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:43,237 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:43,242 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:43,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:43,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:43,354 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-11-22 00:21:43,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:43,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:43,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:43,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:43,383 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-11-22 00:21:43,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:43,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:43,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:43,405 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-11-22 00:21:43,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:43,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 238 [2022-11-22 00:21:43,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:43,543 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:21:43,544 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 261 treesize of output 257 [2022-11-22 00:21:43,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:43,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:43,590 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:21:43,590 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 261 treesize of output 261 [2022-11-22 00:21:43,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:43,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 238 [2022-11-22 00:21:43,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:43,738 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:21:43,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 261 treesize of output 257 [2022-11-22 00:21:43,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:43,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:43,777 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:21:43,778 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 261 treesize of output 261 [2022-11-22 00:21:43,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:43,923 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 [2022-11-22 00:21:43,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:21:43,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:43,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:21:43,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:43,987 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 21 treesize of output 20 [2022-11-22 00:21:44,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:44,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:44,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:44,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:44,122 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:44,122 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:21:44,141 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:21:44,142 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 [2022-11-22 00:21:44,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:44,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:44,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:44,169 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:44,169 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:21:44,191 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:44,192 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 [2022-11-22 00:21:44,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:44,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:44,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:44,310 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:44,310 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:21:44,331 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:44,332 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 [2022-11-22 00:21:44,355 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:21:44,356 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 [2022-11-22 00:21:44,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:44,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:44,379 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:44,385 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:44,385 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:21:44,611 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:21:44,611 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 240 treesize of output 229 [2022-11-22 00:21:44,745 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 [2022-11-22 00:21:44,755 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 [2022-11-22 00:21:44,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:44,775 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 [2022-11-22 00:21:44,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:44,800 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:44,802 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:44,804 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:44,886 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:21:44,886 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 240 treesize of output 229 [2022-11-22 00:21:45,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:45,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:45,120 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 [2022-11-22 00:21:45,132 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 [2022-11-22 00:21:45,142 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 [2022-11-22 00:21:45,158 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:45,160 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:45,163 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:21:45,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:21:45,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:45,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:45,315 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:21:45,316 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 240 treesize of output 229 [2022-11-22 00:21:45,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:45,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:45,437 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 [2022-11-22 00:21:45,447 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-11-22 00:21:45,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 00:21:45,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 00:21:45,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:21:45,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:21:45,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:21:45,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:45,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:45,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:45,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:45,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:45,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:45,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:45,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:45,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:45,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:45,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:45,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:45,530 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:21:50,786 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4426#(and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 0) 0) (= |ULTIMATE.start_dll_circular_insert_~head#1.base| |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 0) 0) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_insert_#in~data#1| |ULTIMATE.start_dll_circular_insert_~data#1|) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (not (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| 0)) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 4) 0) (= |ULTIMATE.start_dll_circular_insert_#in~data#1| |ULTIMATE.start_main_~data~0#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 4) 0) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| 0) (= |ULTIMATE.start_dll_circular_insert_~index#1| |ULTIMATE.start_dll_circular_insert_#in~index#1|) (= (select |#length| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 12) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (< |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_dll_circular_insert_~head#1.offset| |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (not (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~head#1.base|))) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (= |ULTIMATE.start_dll_circular_insert_~data#1| (select (select |#memory_int| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 8)) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (ite (and (not (= (mod |ULTIMATE.start_main_~len~0#1| 2) 0)) (< |ULTIMATE.start_main_~len~0#1| 0)) (+ (div |ULTIMATE.start_main_~len~0#1| 2) 1) (div |ULTIMATE.start_main_~len~0#1| 2)) |ULTIMATE.start_dll_circular_insert_#in~index#1|) (= |#NULL.base| 0))' at error location [2022-11-22 00:21:50,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:21:50,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:21:50,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 15 [2022-11-22 00:21:50,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548644953] [2022-11-22 00:21:50,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:21:50,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 00:21:50,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:21:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 00:21:50,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1328, Unknown=4, NotChecked=308, Total=1806 [2022-11-22 00:21:50,788 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand has 17 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 00:21:51,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:21:51,274 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2022-11-22 00:21:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:21:51,275 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 34 [2022-11-22 00:21:51,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:21:51,276 INFO L225 Difference]: With dead ends: 147 [2022-11-22 00:21:51,276 INFO L226 Difference]: Without dead ends: 147 [2022-11-22 00:21:51,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=197, Invalid=1537, Unknown=4, NotChecked=332, Total=2070 [2022-11-22 00:21:51,278 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 322 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 485 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:21:51,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 218 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 367 Invalid, 0 Unknown, 485 Unchecked, 0.4s Time] [2022-11-22 00:21:51,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-22 00:21:51,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 130. [2022-11-22 00:21:51,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 72 states have (on average 1.8472222222222223) internal successors, (133), 123 states have internal predecessors, (133), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:21:51,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2022-11-22 00:21:51,283 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 34 [2022-11-22 00:21:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:21:51,283 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2022-11-22 00:21:51,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 14 states have internal predecessors, (44), 3 states have call successors, (4), 1 states have call predecessors, (4), 5 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 00:21:51,284 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2022-11-22 00:21:51,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-22 00:21:51,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:21:51,285 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:21:51,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 00:21:51,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-22 00:21:51,491 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:21:51,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:21:51,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1568588155, now seen corresponding path program 1 times [2022-11-22 00:21:51,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:21:51,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898717362] [2022-11-22 00:21:51,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:51,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:21:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 00:21:52,241 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:21:52,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898717362] [2022-11-22 00:21:52,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898717362] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:21:52,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492980416] [2022-11-22 00:21:52,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:21:52,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:21:52,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:21:52,244 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:21:52,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 00:21:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:21:52,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-22 00:21:52,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:21:52,499 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 [2022-11-22 00:21:52,519 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 5 treesize of output 3 [2022-11-22 00:21:52,529 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_1107 Int)) (= |c_#length| (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1107))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2022-11-22 00:21:52,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:52,567 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 [2022-11-22 00:21:52,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 00:21:52,598 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_1108 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1108) |c_#length|)))) is different from true [2022-11-22 00:21:52,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:52,640 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 14 [2022-11-22 00:21:52,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:21:52,729 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_1109 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1109) |c_#length|)))) is different from true [2022-11-22 00:21:52,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:52,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 00:21:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 15 not checked. [2022-11-22 00:21:52,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:21:52,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492980416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:21:52,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2033714176] [2022-11-22 00:21:52,898 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-22 00:21:52,898 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:21:52,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:21:52,898 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:21:52,898 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:21:52,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:52,923 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 [2022-11-22 00:21:52,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:52,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:52,953 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 [2022-11-22 00:21:52,965 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 [2022-11-22 00:21:52,970 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 [2022-11-22 00:21:52,976 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 15 treesize of output 1 [2022-11-22 00:21:52,982 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 11 treesize of output 7 [2022-11-22 00:21:52,988 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 11 treesize of output 7 [2022-11-22 00:21:52,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:53,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:53,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:53,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:53,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:53,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,039 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 36 treesize of output 23 [2022-11-22 00:21:53,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,066 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 [2022-11-22 00:21:53,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,100 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 [2022-11-22 00:21:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,143 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 [2022-11-22 00:21:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,231 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:53,232 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 [2022-11-22 00:21:53,264 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 [2022-11-22 00:21:53,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:53,287 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 [2022-11-22 00:21:53,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:53,314 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 [2022-11-22 00:21:53,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,345 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:53,345 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 [2022-11-22 00:21:53,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:53,398 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 [2022-11-22 00:21:53,407 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 [2022-11-22 00:21:53,418 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 7 treesize of output 3 [2022-11-22 00:21:53,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:53,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:21:53,503 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 26 treesize of output 21 [2022-11-22 00:21:53,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 11 [2022-11-22 00:21:53,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,589 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 27 treesize of output 11 [2022-11-22 00:21:53,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:53,637 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:21:53,638 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 28 treesize of output 34 [2022-11-22 00:21:53,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:53,672 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:21:53,673 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 28 treesize of output 30 [2022-11-22 00:21:53,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:53,750 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:21:53,751 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 28 treesize of output 30 [2022-11-22 00:21:53,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,768 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 27 treesize of output 11 [2022-11-22 00:21:53,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:53,800 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:21:53,800 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 28 treesize of output 34 [2022-11-22 00:21:53,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:53,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:21:53,899 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 [2022-11-22 00:21:53,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:21:53,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:53,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:53,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:21:54,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:54,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:54,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:54,193 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:54,194 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:21:54,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:54,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:54,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:54,221 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:54,221 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:21:54,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:21:54,258 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 [2022-11-22 00:21:54,290 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:54,290 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 [2022-11-22 00:21:54,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:54,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:54,439 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:54,445 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:54,446 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:21:54,467 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:54,467 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 [2022-11-22 00:21:54,490 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:21:54,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2022-11-22 00:21:54,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:54,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:54,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:21:54,523 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:21:54,523 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:21:54,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:54,654 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:54,655 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 [2022-11-22 00:21:54,697 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 [2022-11-22 00:21:54,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:21:54,717 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 [2022-11-22 00:21:54,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:54,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:54,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:54,772 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:54,772 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 [2022-11-22 00:21:54,804 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 [2022-11-22 00:21:54,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:54,827 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 [2022-11-22 00:21:54,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:21:54,851 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 [2022-11-22 00:21:54,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:21:54,956 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 26 treesize of output 21 [2022-11-22 00:21:54,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-22 00:21:54,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:55,006 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:21:55,006 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 [2022-11-22 00:21:55,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:55,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:55,041 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 [2022-11-22 00:21:55,052 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 65 for LOIs [2022-11-22 00:21:55,076 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 [2022-11-22 00:21:55,094 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 [2022-11-22 00:21:55,167 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 11 treesize of output 7 [2022-11-22 00:21:55,178 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 11 treesize of output 7 [2022-11-22 00:21:55,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:21:55,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:55,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:55,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:55,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:21:55,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:55,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:55,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:55,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:55,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:55,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:21:55,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:21:55,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:21:55,423 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:21:59,710 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4854#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (< (select |#length| |ULTIMATE.start_dll_circular_insert_~head#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~head#1.offset| 4)) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| 0) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0))' at error location [2022-11-22 00:21:59,710 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:21:59,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:21:59,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 13 [2022-11-22 00:21:59,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887759375] [2022-11-22 00:21:59,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:21:59,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 00:21:59,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:21:59,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 00:21:59,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=953, Unknown=3, NotChecked=192, Total=1260 [2022-11-22 00:21:59,712 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand has 15 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 00:22:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:00,268 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2022-11-22 00:22:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 00:22:00,269 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 34 [2022-11-22 00:22:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:00,270 INFO L225 Difference]: With dead ends: 137 [2022-11-22 00:22:00,270 INFO L226 Difference]: Without dead ends: 137 [2022-11-22 00:22:00,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=134, Invalid=1135, Unknown=3, NotChecked=210, Total=1482 [2022-11-22 00:22:00,271 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 258 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:00,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 229 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 473 Invalid, 0 Unknown, 330 Unchecked, 0.5s Time] [2022-11-22 00:22:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-22 00:22:00,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 120. [2022-11-22 00:22:00,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 72 states have (on average 1.7083333333333333) internal successors, (123), 113 states have internal predecessors, (123), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 00:22:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2022-11-22 00:22:00,279 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 34 [2022-11-22 00:22:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:00,279 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2022-11-22 00:22:00,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 10 states have (on average 3.9) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 00:22:00,280 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2022-11-22 00:22:00,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-22 00:22:00,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:00,286 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:00,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 00:22:00,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-22 00:22:00,492 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:00,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:00,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1807871722, now seen corresponding path program 1 times [2022-11-22 00:22:00,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:00,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863700490] [2022-11-22 00:22:00,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:00,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:00,598 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 00:22:00,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:00,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863700490] [2022-11-22 00:22:00,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863700490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:22:00,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979692214] [2022-11-22 00:22:00,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:00,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:22:00,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:22:00,601 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:22:00,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 00:22:00,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:00,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 00:22:00,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:22:00,860 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 00:22:00,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:22:00,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979692214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:00,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:22:00,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-22 00:22:00,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865919757] [2022-11-22 00:22:00,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:00,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:22:00,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:00,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:22:00,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:22:00,862 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:22:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:00,924 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-22 00:22:00,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:22:00,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2022-11-22 00:22:00,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:00,928 INFO L225 Difference]: With dead ends: 108 [2022-11-22 00:22:00,928 INFO L226 Difference]: Without dead ends: 108 [2022-11-22 00:22:00,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:22:00,929 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 182 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:00,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 103 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:22:00,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-22 00:22:00,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-11-22 00:22:00,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 65 states have (on average 1.676923076923077) internal successors, (109), 102 states have internal predecessors, (109), 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) [2022-11-22 00:22:00,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2022-11-22 00:22:00,937 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 34 [2022-11-22 00:22:00,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:00,937 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2022-11-22 00:22:00,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:22:00,938 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2022-11-22 00:22:00,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-22 00:22:00,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:00,939 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:00,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 00:22:01,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-22 00:22:01,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:01,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:01,143 INFO L85 PathProgramCache]: Analyzing trace with hash -120110940, now seen corresponding path program 1 times [2022-11-22 00:22:01,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:01,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381431524] [2022-11-22 00:22:01,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:01,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:01,900 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 00:22:01,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:01,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381431524] [2022-11-22 00:22:01,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381431524] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:22:01,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579517041] [2022-11-22 00:22:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:01,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:22:01,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:22:01,902 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:22:01,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 00:22:02,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:02,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-22 00:22:02,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:22:02,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:02,469 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1448 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1448))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_1445 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_1445))))) is different from true [2022-11-22 00:22:02,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:02,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:02,498 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-11-22 00:22:02,498 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 [2022-11-22 00:22:02,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:02,535 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 00:22:02,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 00:22:02,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579517041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:02,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 00:22:02,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2022-11-22 00:22:02,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490998463] [2022-11-22 00:22:02,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:02,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 00:22:02,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 00:22:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=402, Unknown=2, NotChecked=40, Total=506 [2022-11-22 00:22:02,537 INFO L87 Difference]: Start difference. First operand 108 states and 115 transitions. Second operand has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:22:03,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:03,147 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2022-11-22 00:22:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 00:22:03,148 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-22 00:22:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:03,150 INFO L225 Difference]: With dead ends: 186 [2022-11-22 00:22:03,150 INFO L226 Difference]: Without dead ends: 186 [2022-11-22 00:22:03,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=514, Unknown=2, NotChecked=46, Total=650 [2022-11-22 00:22:03,151 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 129 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:03,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 287 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 448 Invalid, 3 Unknown, 171 Unchecked, 0.5s Time] [2022-11-22 00:22:03,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-22 00:22:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 115. [2022-11-22 00:22:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 72 states have (on average 1.75) internal successors, (126), 109 states have internal predecessors, (126), 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) [2022-11-22 00:22:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 132 transitions. [2022-11-22 00:22:03,156 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 132 transitions. Word has length 36 [2022-11-22 00:22:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:03,157 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 132 transitions. [2022-11-22 00:22:03,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:22:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 132 transitions. [2022-11-22 00:22:03,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-22 00:22:03,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:03,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:03,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 00:22:03,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-22 00:22:03,373 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:03,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:03,373 INFO L85 PathProgramCache]: Analyzing trace with hash -120110939, now seen corresponding path program 1 times [2022-11-22 00:22:03,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:03,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892721904] [2022-11-22 00:22:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:05,093 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:22:05,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:05,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892721904] [2022-11-22 00:22:05,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892721904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:22:05,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029069273] [2022-11-22 00:22:05,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:05,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:22:05,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:22:05,096 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:22:05,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 00:22:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:05,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-22 00:22:05,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:22:05,416 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 [2022-11-22 00:22:05,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:05,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:05,928 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int) (v_ArrVal_1628 (Array Int Int)) (v_ArrVal_1627 (Array Int Int))) (and (= (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1628) |c_#memory_$Pointer$.offset|) (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1627) |c_#memory_$Pointer$.base|))) is different from true [2022-11-22 00:22:05,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:05,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 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 [2022-11-22 00:22:05,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:05,953 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 24 treesize of output 19 [2022-11-22 00:22:05,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:05,959 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 29 treesize of output 29 [2022-11-22 00:22:05,973 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-22 00:22:05,974 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 [2022-11-22 00:22:06,021 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 23 treesize of output 15 [2022-11-22 00:22:06,023 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 26 treesize of output 14 [2022-11-22 00:22:06,061 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-22 00:22:06,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:22:06,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029069273] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:22:06,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [62620351] [2022-11-22 00:22:06,395 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2022-11-22 00:22:06,395 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:22:06,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:22:06,395 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:22:06,395 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:22:06,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,444 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 [2022-11-22 00:22:06,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,470 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 [2022-11-22 00:22:06,481 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 [2022-11-22 00:22:06,485 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 [2022-11-22 00:22:06,491 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 11 treesize of output 7 [2022-11-22 00:22:06,497 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 15 treesize of output 1 [2022-11-22 00:22:06,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:06,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 00:22:06,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:22:06,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,521 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 21 treesize of output 20 [2022-11-22 00:22:06,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:22:06,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:06,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:22:06,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,573 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 [2022-11-22 00:22:06,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,601 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 [2022-11-22 00:22:06,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,627 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 [2022-11-22 00:22:06,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,685 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:22:06,686 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 [2022-11-22 00:22:06,714 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 [2022-11-22 00:22:06,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:06,741 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 [2022-11-22 00:22:06,756 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 [2022-11-22 00:22:06,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:06,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,790 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:22:06,790 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 [2022-11-22 00:22:06,824 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 [2022-11-22 00:22:06,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:06,847 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 [2022-11-22 00:22:06,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:06,867 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 [2022-11-22 00:22:06,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:22:06,918 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 26 treesize of output 21 [2022-11-22 00:22:06,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-22 00:22:06,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:06,970 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 27 treesize of output 11 [2022-11-22 00:22:06,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:06,997 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:22:06,997 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 28 treesize of output 34 [2022-11-22 00:22:07,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:07,028 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:22:07,029 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 28 treesize of output 30 [2022-11-22 00:22:07,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,067 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 27 treesize of output 11 [2022-11-22 00:22:07,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:07,095 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:22:07,096 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 28 treesize of output 30 [2022-11-22 00:22:07,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,110 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:07,124 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:22:07,124 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 28 treesize of output 34 [2022-11-22 00:22:07,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:22:07,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:07,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:22:07,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:07,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:07,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,281 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 21 treesize of output 20 [2022-11-22 00:22:07,454 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:07,454 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 [2022-11-22 00:22:07,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:07,489 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:07,489 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:07,518 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:22:07,519 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 [2022-11-22 00:22:07,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,542 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:07,549 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:07,549 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:07,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:07,666 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:07,667 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:07,689 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:07,689 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 [2022-11-22 00:22:07,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:22:07,712 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 [2022-11-22 00:22:07,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,741 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:07,748 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:07,748 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:07,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:07,937 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:22:07,937 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 [2022-11-22 00:22:07,971 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 [2022-11-22 00:22:07,980 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 [2022-11-22 00:22:07,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:08,002 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 [2022-11-22 00:22:08,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:08,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:08,038 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:22:08,038 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 [2022-11-22 00:22:08,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:08,081 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 15 treesize of output 7 [2022-11-22 00:22:08,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:22:08,099 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 [2022-11-22 00:22:08,108 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 [2022-11-22 00:22:08,206 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 [2022-11-22 00:22:08,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:08,219 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 11 treesize of output 7 [2022-11-22 00:22:08,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:08,252 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:22:08,252 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 [2022-11-22 00:22:08,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:08,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:08,280 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 [2022-11-22 00:22:08,293 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 18 for LOIs [2022-11-22 00:22:08,301 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 [2022-11-22 00:22:08,305 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 [2022-11-22 00:22:08,324 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 11 treesize of output 7 [2022-11-22 00:22:08,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:22:08,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:22:08,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:08,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:22:08,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:08,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:08,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:22:08,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:08,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:08,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:08,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:22:08,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:08,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:08,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:22:08,403 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:22:15,531 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6040#(and (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 0) 0) (= |ULTIMATE.start_dll_circular_insert_~head#1.base| |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 0) 0) (= |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|)) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_insert_#in~data#1| |ULTIMATE.start_dll_circular_insert_~data#1|) (= |ULTIMATE.start_dll_circular_create_#res#1.offset| |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (not (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| 0)) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 4) 0) (= |ULTIMATE.start_dll_circular_insert_#in~data#1| |ULTIMATE.start_main_~data~0#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 4) 0) (= |ULTIMATE.start_dll_circular_insert_~last~1#1.base| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (< 0 |ULTIMATE.start_dll_circular_insert_~index#1|) (= |ULTIMATE.start_dll_circular_insert_~index#1| |ULTIMATE.start_dll_circular_insert_#in~index#1|) (<= (+ |ULTIMATE.start_dll_circular_insert_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (= (select |#length| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 12) (or (not (<= 0 |ULTIMATE.start_dll_circular_insert_~last~1#1.offset|)) (not (<= (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) (select |#length| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|)))) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (< |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_dll_circular_insert_~head#1.offset| |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (<= 0 |#NULL.offset|) (= |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (= |ULTIMATE.start_dll_circular_insert_~data#1| (select (select |#memory_int| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) 8)) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_#in~head#1.base| |ULTIMATE.start_main_~#s~0#1.base|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |ULTIMATE.start_dll_circular_create_#res#1.base| |ULTIMATE.start_dll_circular_create_~head~0#1.base|) (= (ite (and (not (= (mod |ULTIMATE.start_main_~len~0#1| 2) 0)) (< |ULTIMATE.start_main_~len~0#1| 0)) (+ (div |ULTIMATE.start_main_~len~0#1| 2) 1) (div |ULTIMATE.start_main_~len~0#1| 2)) |ULTIMATE.start_dll_circular_insert_#in~index#1|) (= |#NULL.base| 0))' at error location [2022-11-22 00:22:15,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:22:15,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:22:15,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 25 [2022-11-22 00:22:15,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929433957] [2022-11-22 00:22:15,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:22:15,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-22 00:22:15,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:15,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-22 00:22:15,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=2235, Unknown=1, NotChecked=96, Total=2550 [2022-11-22 00:22:15,534 INFO L87 Difference]: Start difference. First operand 115 states and 132 transitions. Second operand has 26 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 23 states have internal predecessors, (51), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 00:22:17,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:17,513 INFO L93 Difference]: Finished difference Result 184 states and 197 transitions. [2022-11-22 00:22:17,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 00:22:17,516 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 23 states have internal predecessors, (51), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 36 [2022-11-22 00:22:17,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:17,518 INFO L225 Difference]: With dead ends: 184 [2022-11-22 00:22:17,518 INFO L226 Difference]: Without dead ends: 184 [2022-11-22 00:22:17,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 986 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=311, Invalid=3232, Unknown=1, NotChecked=116, Total=3660 [2022-11-22 00:22:17,520 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 584 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:17,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 563 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1318 Invalid, 0 Unknown, 191 Unchecked, 1.4s Time] [2022-11-22 00:22:17,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-22 00:22:17,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 115. [2022-11-22 00:22:17,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 72 states have (on average 1.7222222222222223) internal successors, (124), 109 states have internal predecessors, (124), 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) [2022-11-22 00:22:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2022-11-22 00:22:17,526 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 36 [2022-11-22 00:22:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:17,526 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2022-11-22 00:22:17,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 23 states have internal predecessors, (51), 4 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 00:22:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2022-11-22 00:22:17,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-22 00:22:17,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:17,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:17,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 00:22:17,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:22:17,735 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:17,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash 571722593, now seen corresponding path program 1 times [2022-11-22 00:22:17,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:17,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127640371] [2022-11-22 00:22:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:17,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 00:22:17,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:17,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127640371] [2022-11-22 00:22:17,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127640371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:17,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:17,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:22:17,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948805430] [2022-11-22 00:22:17,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:17,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 00:22:17,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:17,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 00:22:17,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 00:22:17,816 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:22:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:17,875 INFO L93 Difference]: Finished difference Result 149 states and 160 transitions. [2022-11-22 00:22:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 00:22:17,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2022-11-22 00:22:17,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:17,877 INFO L225 Difference]: With dead ends: 149 [2022-11-22 00:22:17,877 INFO L226 Difference]: Without dead ends: 149 [2022-11-22 00:22:17,877 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 [2022-11-22 00:22:17,878 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 68 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:17,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 155 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:22:17,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-22 00:22:17,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 111. [2022-11-22 00:22:17,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 68 states have (on average 1.661764705882353) internal successors, (113), 105 states have internal predecessors, (113), 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) [2022-11-22 00:22:17,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2022-11-22 00:22:17,883 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 37 [2022-11-22 00:22:17,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:17,883 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2022-11-22 00:22:17,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:22:17,884 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2022-11-22 00:22:17,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-22 00:22:17,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:17,885 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:17,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 00:22:17,885 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:17,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:17,885 INFO L85 PathProgramCache]: Analyzing trace with hash 537682238, now seen corresponding path program 1 times [2022-11-22 00:22:17,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:17,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485347583] [2022-11-22 00:22:17,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:17,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 00:22:18,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:18,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485347583] [2022-11-22 00:22:18,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485347583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:18,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:18,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:22:18,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106470049] [2022-11-22 00:22:18,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:18,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 00:22:18,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:18,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 00:22:18,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:22:18,087 INFO L87 Difference]: Start difference. First operand 111 states and 119 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:22:18,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:18,144 INFO L93 Difference]: Finished difference Result 108 states and 115 transitions. [2022-11-22 00:22:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:22:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2022-11-22 00:22:18,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:18,146 INFO L225 Difference]: With dead ends: 108 [2022-11-22 00:22:18,146 INFO L226 Difference]: Without dead ends: 108 [2022-11-22 00:22:18,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 00:22:18,147 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 250 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:18,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 113 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:22:18,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-22 00:22:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-11-22 00:22:18,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 67 states have (on average 1.626865671641791) internal successors, (109), 102 states have internal predecessors, (109), 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) [2022-11-22 00:22:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 115 transitions. [2022-11-22 00:22:18,152 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 115 transitions. Word has length 38 [2022-11-22 00:22:18,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:18,152 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 115 transitions. [2022-11-22 00:22:18,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:22:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 115 transitions. [2022-11-22 00:22:18,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-22 00:22:18,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:18,153 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:18,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 00:22:18,154 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:18,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:18,154 INFO L85 PathProgramCache]: Analyzing trace with hash -329968766, now seen corresponding path program 1 times [2022-11-22 00:22:18,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:18,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682517826] [2022-11-22 00:22:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:18,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 00:22:18,269 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:18,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682517826] [2022-11-22 00:22:18,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682517826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:18,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:18,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:22:18,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69390186] [2022-11-22 00:22:18,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:18,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:22:18,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:18,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:22:18,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:22:18,271 INFO L87 Difference]: Start difference. First operand 108 states and 115 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, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:22:18,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:18,504 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2022-11-22 00:22:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:22:18,505 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, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-22 00:22:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:18,506 INFO L225 Difference]: With dead ends: 119 [2022-11-22 00:22:18,506 INFO L226 Difference]: Without dead ends: 119 [2022-11-22 00:22:18,506 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 [2022-11-22 00:22:18,507 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 72 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:18,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 186 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:22:18,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-22 00:22:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 102. [2022-11-22 00:22:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 67 states have (on average 1.537313432835821) internal successors, (103), 96 states have internal predecessors, (103), 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) [2022-11-22 00:22:18,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2022-11-22 00:22:18,511 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 39 [2022-11-22 00:22:18,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:18,511 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2022-11-22 00:22:18,512 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, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:22:18,512 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2022-11-22 00:22:18,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-22 00:22:18,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:18,513 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:18,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 00:22:18,513 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash -329968765, now seen corresponding path program 1 times [2022-11-22 00:22:18,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:18,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619608543] [2022-11-22 00:22:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:18,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 00:22:18,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:18,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619608543] [2022-11-22 00:22:18,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619608543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:18,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:18,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 00:22:18,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026409338] [2022-11-22 00:22:18,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:18,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:22:18,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:18,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:22:18,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:22:18,689 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:22:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:18,747 INFO L93 Difference]: Finished difference Result 101 states and 107 transitions. [2022-11-22 00:22:18,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:22:18,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2022-11-22 00:22:18,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:18,749 INFO L225 Difference]: With dead ends: 101 [2022-11-22 00:22:18,749 INFO L226 Difference]: Without dead ends: 101 [2022-11-22 00:22:18,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:22:18,750 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 82 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:18,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 169 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 00:22:18,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-22 00:22:18,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-22 00:22:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 95 states have internal predecessors, (101), 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) [2022-11-22 00:22:18,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2022-11-22 00:22:18,754 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 39 [2022-11-22 00:22:18,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:18,754 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2022-11-22 00:22:18,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 00:22:18,755 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2022-11-22 00:22:18,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-22 00:22:18,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:18,755 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:18,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 00:22:18,756 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash -511525369, now seen corresponding path program 1 times [2022-11-22 00:22:18,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:18,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560292603] [2022-11-22 00:22:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:18,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 00:22:18,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:18,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560292603] [2022-11-22 00:22:18,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560292603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:18,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:18,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:22:18,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937021207] [2022-11-22 00:22:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:22:18,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:22:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:22:18,856 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:22:19,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:19,009 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2022-11-22 00:22:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 00:22:19,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-22 00:22:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:19,013 INFO L225 Difference]: With dead ends: 153 [2022-11-22 00:22:19,013 INFO L226 Difference]: Without dead ends: 153 [2022-11-22 00:22:19,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 00:22:19,014 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 143 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:19,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 122 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:22:19,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-22 00:22:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 100. [2022-11-22 00:22:19,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 66 states have (on average 1.5151515151515151) internal successors, (100), 94 states have internal predecessors, (100), 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) [2022-11-22 00:22:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2022-11-22 00:22:19,022 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 39 [2022-11-22 00:22:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:19,022 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2022-11-22 00:22:19,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:22:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2022-11-22 00:22:19,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-22 00:22:19,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:19,024 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:19,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 00:22:19,024 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:19,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash -511525368, now seen corresponding path program 1 times [2022-11-22 00:22:19,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:19,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522849264] [2022-11-22 00:22:19,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:19,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:19,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 00:22:19,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:19,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522849264] [2022-11-22 00:22:19,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522849264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:19,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:19,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 00:22:19,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808815181] [2022-11-22 00:22:19,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:19,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 00:22:19,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 00:22:19,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:22:19,219 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:22:19,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:19,361 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2022-11-22 00:22:19,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 00:22:19,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-22 00:22:19,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:19,363 INFO L225 Difference]: With dead ends: 99 [2022-11-22 00:22:19,363 INFO L226 Difference]: Without dead ends: 99 [2022-11-22 00:22:19,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 00:22:19,364 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:19,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 111 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:22:19,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-22 00:22:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-22 00:22:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 66 states have (on average 1.5) internal successors, (99), 93 states have internal predecessors, (99), 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) [2022-11-22 00:22:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 105 transitions. [2022-11-22 00:22:19,368 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 105 transitions. Word has length 39 [2022-11-22 00:22:19,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:19,368 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 105 transitions. [2022-11-22 00:22:19,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:22:19,369 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 105 transitions. [2022-11-22 00:22:19,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-22 00:22:19,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:19,369 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:19,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-22 00:22:19,370 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:19,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1322582785, now seen corresponding path program 1 times [2022-11-22 00:22:19,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:19,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687040713] [2022-11-22 00:22:19,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:19,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:19,624 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 00:22:19,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:19,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687040713] [2022-11-22 00:22:19,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687040713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 00:22:19,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 00:22:19,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 00:22:19,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663016335] [2022-11-22 00:22:19,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:22:19,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 00:22:19,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 00:22:19,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 00:22:19,627 INFO L87 Difference]: Start difference. First operand 99 states and 105 transitions. Second operand has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:22:19,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:19,820 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2022-11-22 00:22:19,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:22:19,821 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-22 00:22:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:19,821 INFO L225 Difference]: With dead ends: 93 [2022-11-22 00:22:19,821 INFO L226 Difference]: Without dead ends: 93 [2022-11-22 00:22:19,822 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 [2022-11-22 00:22:19,822 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 66 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:19,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 201 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:22:19,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-22 00:22:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-11-22 00:22:19,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 87 states have internal predecessors, (93), 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) [2022-11-22 00:22:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2022-11-22 00:22:19,826 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 40 [2022-11-22 00:22:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:19,826 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2022-11-22 00:22:19,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:22:19,826 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2022-11-22 00:22:19,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-22 00:22:19,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:19,827 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:19,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-22 00:22:19,827 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:19,828 INFO L85 PathProgramCache]: Analyzing trace with hash -308262845, now seen corresponding path program 1 times [2022-11-22 00:22:19,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:19,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493806341] [2022-11-22 00:22:19,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:19,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:22,335 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:22:22,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:22,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493806341] [2022-11-22 00:22:22,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493806341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:22:22,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700099459] [2022-11-22 00:22:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:22,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:22:22,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:22:22,339 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:22:22,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 00:22:22,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:22,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 98 conjunts are in the unsatisfiable core [2022-11-22 00:22:22,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:22:22,724 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 [2022-11-22 00:22:22,972 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:22:22,972 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 [2022-11-22 00:22:23,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:22:23,216 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:22:23,217 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 35 treesize of output 34 [2022-11-22 00:22:23,411 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:22:23,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-22 00:22:23,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2022-11-22 00:22:23,583 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:22:23,583 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 39 treesize of output 22 [2022-11-22 00:22:23,588 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 [2022-11-22 00:22:23,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:23,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:23,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:23,915 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:22:23,915 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 45 treesize of output 43 [2022-11-22 00:22:23,952 INFO L321 Elim1Store]: treesize reduction 76, result has 36.1 percent of original size [2022-11-22 00:22:23,952 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 36 treesize of output 52 [2022-11-22 00:22:24,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:24,288 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:22:24,288 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 70 treesize of output 33 [2022-11-22 00:22:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:22:24,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:22:24,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700099459] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:22:24,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1281179219] [2022-11-22 00:22:24,936 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-22 00:22:24,936 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:22:24,936 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:22:24,937 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:22:24,937 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:22:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:24,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:24,960 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 [2022-11-22 00:22:24,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:24,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:24,986 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 [2022-11-22 00:22:24,998 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 [2022-11-22 00:22:25,001 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 [2022-11-22 00:22:25,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:22:25,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:22:25,015 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 11 treesize of output 7 [2022-11-22 00:22:25,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:25,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:22:25,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:22:25,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:22:25,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:25,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:22:25,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,101 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 [2022-11-22 00:22:25,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,129 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 [2022-11-22 00:22:25,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,158 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 [2022-11-22 00:22:25,257 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:22:25,258 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 240 treesize of output 229 [2022-11-22 00:22:25,367 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 [2022-11-22 00:22:25,378 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 [2022-11-22 00:22:25,390 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 15 treesize of output 7 [2022-11-22 00:22:25,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:25,417 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 [2022-11-22 00:22:25,431 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:25,433 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:25,437 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:25,502 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:22:25,503 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 240 treesize of output 229 [2022-11-22 00:22:25,650 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 [2022-11-22 00:22:25,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:22:25,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:22:25,690 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 [2022-11-22 00:22:25,703 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 9 treesize of output 3 [2022-11-22 00:22:25,718 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:25,719 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:25,721 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:25,723 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:25,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:22:25,785 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 26 treesize of output 21 [2022-11-22 00:22:25,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 11 [2022-11-22 00:22:25,834 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:25,849 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:22:25,850 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 28 treesize of output 34 [2022-11-22 00:22:25,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,880 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 27 treesize of output 11 [2022-11-22 00:22:25,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:25,909 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:22:25,910 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 28 treesize of output 30 [2022-11-22 00:22:25,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:25,967 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:22:25,967 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 28 treesize of output 30 [2022-11-22 00:22:25,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:25,985 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:26,002 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:22:26,002 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 28 treesize of output 34 [2022-11-22 00:22:26,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,027 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 27 treesize of output 11 [2022-11-22 00:22:26,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:26,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:22:26,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:22:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,171 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 21 treesize of output 20 [2022-11-22 00:22:26,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,194 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 21 treesize of output 20 [2022-11-22 00:22:26,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:26,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,444 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:26,451 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:26,451 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:26,480 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:22:26,480 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 [2022-11-22 00:22:26,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:26,509 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:26,509 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:26,528 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:26,528 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 [2022-11-22 00:22:26,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:22:26,667 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 [2022-11-22 00:22:26,689 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:26,689 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 [2022-11-22 00:22:26,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,706 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:26,712 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:26,712 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:26,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:26,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:26,738 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:26,739 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:27,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:22:27,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:27,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:27,261 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-22 00:22:27,262 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 [2022-11-22 00:22:27,276 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 19 treesize of output 1 [2022-11-22 00:22:27,319 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-22 00:22:27,319 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 30 [2022-11-22 00:22:27,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:22:27,421 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-11-22 00:22:27,421 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 28 treesize of output 38 [2022-11-22 00:22:27,471 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-11-22 00:22:27,472 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 38 treesize of output 48 [2022-11-22 00:22:27,629 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:22:27,630 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 240 treesize of output 229 [2022-11-22 00:22:27,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:22:27,823 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 [2022-11-22 00:22:27,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:27,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:27,860 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 [2022-11-22 00:22:27,880 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:27,883 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:27,885 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:27,952 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:22:27,953 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 240 treesize of output 229 [2022-11-22 00:22:28,118 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 [2022-11-22 00:22:28,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:28,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:28,155 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 [2022-11-22 00:22:28,164 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 [2022-11-22 00:22:28,176 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:28,180 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:28,181 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:28,288 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 11 treesize of output 7 [2022-11-22 00:22:28,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:22:28,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:28,351 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:22:28,352 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 240 treesize of output 229 [2022-11-22 00:22:28,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:28,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:28,536 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 [2022-11-22 00:22:28,545 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 65 for LOIs [2022-11-22 00:22:28,568 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 [2022-11-22 00:22:28,584 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 [2022-11-22 00:22:28,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:28,656 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 11 treesize of output 7 [2022-11-22 00:22:28,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:22:28,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:28,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:22:28,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:28,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:22:28,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:28,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:28,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:28,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:22:28,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:28,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:28,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:22:28,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:22:28,870 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:22:38,680 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8166#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (not (= (select |#valid| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) 1)) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|))' at error location [2022-11-22 00:22:38,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:22:38,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:22:38,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 43 [2022-11-22 00:22:38,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955972020] [2022-11-22 00:22:38,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:22:38,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-22 00:22:38,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:22:38,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-22 00:22:38,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=5234, Unknown=1, NotChecked=0, Total=5550 [2022-11-22 00:22:38,683 INFO L87 Difference]: Start difference. First operand 93 states and 99 transitions. Second operand has 44 states, 34 states have (on average 2.0) internal successors, (68), 37 states have internal predecessors, (68), 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) [2022-11-22 00:22:41,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:22:41,705 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2022-11-22 00:22:41,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 00:22:41,706 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 34 states have (on average 2.0) internal successors, (68), 37 states have internal predecessors, (68), 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 42 [2022-11-22 00:22:41,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:22:41,707 INFO L225 Difference]: With dead ends: 110 [2022-11-22 00:22:41,707 INFO L226 Difference]: Without dead ends: 110 [2022-11-22 00:22:41,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=520, Invalid=7135, Unknown=1, NotChecked=0, Total=7656 [2022-11-22 00:22:41,708 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 360 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 53 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 00:22:41,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 566 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1358 Invalid, 2 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 00:22:41,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-22 00:22:41,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 92. [2022-11-22 00:22:41,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 66 states have (on average 1.393939393939394) internal successors, (92), 86 states have internal predecessors, (92), 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) [2022-11-22 00:22:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2022-11-22 00:22:41,711 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 42 [2022-11-22 00:22:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:22:41,711 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2022-11-22 00:22:41,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 34 states have (on average 2.0) internal successors, (68), 37 states have internal predecessors, (68), 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) [2022-11-22 00:22:41,712 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2022-11-22 00:22:41,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-22 00:22:41,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:22:41,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:22:41,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 00:22:41,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-22 00:22:41,920 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:22:41,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:22:41,920 INFO L85 PathProgramCache]: Analyzing trace with hash -308262844, now seen corresponding path program 1 times [2022-11-22 00:22:41,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:22:41,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026252489] [2022-11-22 00:22:41,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:41,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:22:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:22:45,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:22:45,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026252489] [2022-11-22 00:22:45,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026252489] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:22:45,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605699537] [2022-11-22 00:22:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:22:45,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:22:45,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:22:45,032 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:22:45,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 00:22:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:22:45,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-22 00:22:45,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:22:45,360 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 [2022-11-22 00:22:45,798 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-22 00:22:45,799 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 [2022-11-22 00:22:45,819 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:22:45,820 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 [2022-11-22 00:22:46,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:46,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:22:46,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:46,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:46,439 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:22:46,439 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 47 treesize of output 44 [2022-11-22 00:22:46,447 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 18 treesize of output 20 [2022-11-22 00:22:46,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-11-22 00:22:46,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 41 [2022-11-22 00:22:46,709 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:22:46,710 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 63 treesize of output 34 [2022-11-22 00:22:46,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:47,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:47,037 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:22:47,037 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 69 treesize of output 59 [2022-11-22 00:22:47,090 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-22 00:22:47,090 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 28 treesize of output 30 [2022-11-22 00:22:47,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:47,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:47,101 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 [2022-11-22 00:22:47,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 [2022-11-22 00:22:47,434 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-22 00:22:47,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 41 [2022-11-22 00:22:47,446 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-22 00:22:47,447 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 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-22 00:22:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:22:47,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:22:48,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605699537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:22:48,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1039662604] [2022-11-22 00:22:48,262 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-22 00:22:48,262 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:22:48,263 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:22:48,263 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:22:48,263 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:22:48,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,289 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 [2022-11-22 00:22:48,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,316 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 [2022-11-22 00:22:48,327 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 [2022-11-22 00:22:48,332 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 [2022-11-22 00:22:48,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:48,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:48,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:22:48,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:48,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:22:48,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:22:48,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:48,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:22:48,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:22:48,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,429 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 [2022-11-22 00:22:48,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,458 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 [2022-11-22 00:22:48,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:48,493 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 [2022-11-22 00:22:48,647 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:22:48,648 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 240 treesize of output 229 [2022-11-22 00:22:48,898 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 [2022-11-22 00:22:48,925 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 15 treesize of output 7 [2022-11-22 00:22:48,937 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 [2022-11-22 00:22:48,949 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 15 treesize of output 7 [2022-11-22 00:22:48,965 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 [2022-11-22 00:22:48,981 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:48,985 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:48,986 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:49,053 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:22:49,053 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 240 treesize of output 229 [2022-11-22 00:22:49,280 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 [2022-11-22 00:22:49,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:22:49,305 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 15 treesize of output 7 [2022-11-22 00:22:49,316 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 5 treesize of output 3 [2022-11-22 00:22:49,327 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 [2022-11-22 00:22:49,345 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:49,347 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:22:49,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:22:49,431 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 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:22:49,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-22 00:22:49,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:49,486 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 27 treesize of output 11 [2022-11-22 00:22:49,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:49,518 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:22:49,518 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 28 treesize of output 34 [2022-11-22 00:22:49,536 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:49,548 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:22:49,549 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 28 treesize of output 30 [2022-11-22 00:22:49,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:49,617 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:22:49,618 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 28 treesize of output 30 [2022-11-22 00:22:49,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:49,634 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:49,649 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:22:49,650 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 28 treesize of output 34 [2022-11-22 00:22:49,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:49,668 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 27 treesize of output 11 [2022-11-22 00:22:49,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:22:49,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:22:49,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:22:49,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:49,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:49,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 00:22:49,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:49,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:22:49,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:49,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:49,920 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:49,926 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:49,926 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:49,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:22:49,949 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 [2022-11-22 00:22:49,973 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:49,973 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 [2022-11-22 00:22:49,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:49,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:49,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:50,004 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:50,004 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:50,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:50,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:50,073 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:50,079 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:50,080 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:50,112 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:22:50,113 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 [2022-11-22 00:22:50,137 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:50,137 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 [2022-11-22 00:22:50,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:50,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:50,159 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:50,165 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:22:50,166 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:22:50,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:50,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:50,759 INFO L321 Elim1Store]: treesize reduction 56, result has 59.4 percent of original size [2022-11-22 00:22:50,760 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 4 new quantified variables, introduced 9 case distinctions, treesize of input 484 treesize of output 533 [2022-11-22 00:22:50,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:22:50,799 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:22:50,895 INFO L321 Elim1Store]: treesize reduction 80, result has 42.0 percent of original size [2022-11-22 00:22:50,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 456 treesize of output 481 [2022-11-22 00:22:50,984 INFO L321 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2022-11-22 00:22:50,985 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 456 treesize of output 448 [2022-11-22 00:24:19,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:24:19,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:24:19,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:24:19,466 INFO L321 Elim1Store]: treesize reduction 60, result has 26.8 percent of original size [2022-11-22 00:24:19,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75753 treesize of output 71312 [2022-11-22 00:24:24,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:24:24,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:24:24,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:24:24,369 INFO L321 Elim1Store]: treesize reduction 65, result has 20.7 percent of original size [2022-11-22 00:24:24,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74065 treesize of output 69624 [2022-11-22 00:24:28,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:24:28,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72604 treesize of output 71480 [2022-11-22 00:27:38,991 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 9176 conjuctions. This might take some time... [2022-11-22 00:27:56,620 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 9176 conjuctions. [2022-11-22 00:27:57,221 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 9176 conjuctions. This might take some time... [2022-11-22 00:28:12,843 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 9176 conjuctions. [2022-11-22 00:28:15,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:28:15,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:28:15,756 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 11 treesize of output 7 [2022-11-22 00:28:17,103 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 9176 conjuctions. This might take some time... [2022-11-22 00:28:33,605 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 9176 conjuctions. [2022-11-22 00:28:34,198 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:28:34,203 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 240 treesize of output 229 [2022-11-22 00:28:34,396 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 [2022-11-22 00:28:34,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:28:34,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:28:34,418 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 9 treesize of output 3 [2022-11-22 00:28:34,427 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 [2022-11-22 00:28:34,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:28:34,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:28:34,452 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:28:34,454 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:28:34,456 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:28:34,457 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:28:34,514 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:28:34,514 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 240 treesize of output 229 [2022-11-22 00:28:34,701 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 [2022-11-22 00:28:34,710 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 [2022-11-22 00:28:34,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:28:34,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:28:34,744 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 [2022-11-22 00:28:34,760 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:28:34,762 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:28:34,763 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:28:34,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:28:34,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:28:34,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:28:34,963 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:28:34,964 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 240 treesize of output 229 [2022-11-22 00:28:35,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:28:35,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:28:35,104 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 [2022-11-22 00:28:35,113 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-11-22 00:28:35,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 00:28:35,132 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 [2022-11-22 00:28:35,141 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 15 treesize of output 1 [2022-11-22 00:28:35,146 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 11 treesize of output 7 [2022-11-22 00:28:35,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:28:35,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:28:35,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:28:35,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:28:35,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:28:35,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:28:35,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:28:35,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:28:35,184 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 36 treesize of output 23 [2022-11-22 00:28:35,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:28:35,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:28:35,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:28:35,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:28:35,202 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:28:59,820 WARN L233 SmtUtils]: Spent 11.96s on a formula simplification. DAG size of input: 468 DAG size of output: 165 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 00:29:00,434 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8628#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~index#1| 1)) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~index#1|) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (<= |ULTIMATE.start_dll_circular_insert_#in~index#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|))' at error location [2022-11-22 00:29:00,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:29:00,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:29:00,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24] total 46 [2022-11-22 00:29:00,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824709065] [2022-11-22 00:29:00,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:29:00,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-22 00:29:00,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:29:00,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-22 00:29:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=5400, Unknown=3, NotChecked=0, Total=5700 [2022-11-22 00:29:00,438 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand has 47 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 38 states have internal predecessors, (67), 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) [2022-11-22 00:29:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:29:04,290 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2022-11-22 00:29:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 00:29:04,290 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 38 states have internal predecessors, (67), 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 42 [2022-11-22 00:29:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:29:04,291 INFO L225 Difference]: With dead ends: 91 [2022-11-22 00:29:04,291 INFO L226 Difference]: Without dead ends: 91 [2022-11-22 00:29:04,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2912 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=466, Invalid=7903, Unknown=3, NotChecked=0, Total=8372 [2022-11-22 00:29:04,294 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 364 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1817 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 1852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:29:04,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 646 Invalid, 1852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1817 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 00:29:04,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-22 00:29:04,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-11-22 00:29:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 66 states have (on average 1.378787878787879) internal successors, (91), 85 states have internal predecessors, (91), 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) [2022-11-22 00:29:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2022-11-22 00:29:04,298 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 42 [2022-11-22 00:29:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:29:04,298 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2022-11-22 00:29:04,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 38 states have internal predecessors, (67), 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) [2022-11-22 00:29:04,299 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2022-11-22 00:29:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 00:29:04,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:29:04,300 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:29:04,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-22 00:29:04,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-22 00:29:04,503 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:29:04,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:29:04,504 INFO L85 PathProgramCache]: Analyzing trace with hash -818236250, now seen corresponding path program 1 times [2022-11-22 00:29:04,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:29:04,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680375384] [2022-11-22 00:29:04,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:04,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:29:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:08,992 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:29:08,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:29:08,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680375384] [2022-11-22 00:29:08,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680375384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:29:08,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195287047] [2022-11-22 00:29:08,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:29:08,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:29:08,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:29:08,994 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:29:08,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 00:29:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:29:09,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-22 00:29:09,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:29:09,297 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 [2022-11-22 00:29:09,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:29:09,549 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:29:09,550 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 [2022-11-22 00:29:09,719 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 [2022-11-22 00:29:09,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:09,923 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:29:09,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2022-11-22 00:29:10,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:29:10,345 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:29:10,345 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 43 treesize of output 40 [2022-11-22 00:29:10,640 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:29:10,641 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 36 treesize of output 35 [2022-11-22 00:29:10,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 40 [2022-11-22 00:29:10,927 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:29:10,927 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 58 treesize of output 25 [2022-11-22 00:29:10,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:10,962 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 16 treesize of output 10 [2022-11-22 00:29:10,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:29:11,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:11,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:29:11,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:11,495 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:29:11,495 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 66 treesize of output 56 [2022-11-22 00:29:11,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:11,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:11,529 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-22 00:29:11,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 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 [2022-11-22 00:29:11,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:29:12,513 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:29:12,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 88 treesize of output 61 [2022-11-22 00:29:12,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2022-11-22 00:29:12,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:12,681 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 41 treesize of output 37 [2022-11-22 00:29:12,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:12,715 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 41 treesize of output 37 [2022-11-22 00:29:12,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-22 00:29:12,958 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 26 treesize of output 14 [2022-11-22 00:29:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:29:12,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:29:12,974 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2966 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_2966) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) 1)) is different from false [2022-11-22 00:29:45,014 INFO L321 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2022-11-22 00:29:45,015 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 29 treesize of output 28 [2022-11-22 00:29:48,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195287047] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:29:48,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1202873098] [2022-11-22 00:29:48,951 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-22 00:29:48,951 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:29:48,952 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:29:48,952 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:29:48,952 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:29:48,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:48,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:48,975 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 [2022-11-22 00:29:49,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,010 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 [2022-11-22 00:29:49,022 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 [2022-11-22 00:29:49,026 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 [2022-11-22 00:29:49,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:29:49,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:29:49,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:29:49,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:29:49,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:29:49,069 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 19 treesize of output 1 [2022-11-22 00:29:49,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:29:49,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,089 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 36 treesize of output 23 [2022-11-22 00:29:49,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:29:49,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,127 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 [2022-11-22 00:29:49,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,156 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 [2022-11-22 00:29:49,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,194 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 [2022-11-22 00:29:49,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,255 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:29:49,255 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 [2022-11-22 00:29:49,289 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 [2022-11-22 00:29:49,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:29:49,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:29:49,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:29:49,342 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 [2022-11-22 00:29:49,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,373 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:29:49,373 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 [2022-11-22 00:29:49,407 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 [2022-11-22 00:29:49,423 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 [2022-11-22 00:29:49,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:29:49,449 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 [2022-11-22 00:29:49,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:29:49,548 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:49,549 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-11-22 00:29:49,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,567 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:49,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:49,571 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-11-22 00:29:49,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:49,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:49,596 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-11-22 00:29:49,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 238 [2022-11-22 00:29:49,742 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:49,766 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:29:49,766 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 261 treesize of output 261 [2022-11-22 00:29:49,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:49,805 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:29:49,806 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 249 treesize of output 245 [2022-11-22 00:29:49,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:49,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 238 [2022-11-22 00:29:49,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:49,976 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:29:49,977 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 261 treesize of output 257 [2022-11-22 00:29:49,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,001 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:50,024 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:29:50,024 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 261 treesize of output 261 [2022-11-22 00:29:50,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:29:50,181 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 11 treesize of output 7 [2022-11-22 00:29:50,191 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 15 treesize of output 1 [2022-11-22 00:29:50,221 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 19 treesize of output 1 [2022-11-22 00:29:50,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:29:50,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:29:50,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:50,369 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:29:50,369 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:29:50,398 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:29:50,398 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 [2022-11-22 00:29:50,436 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:29:50,437 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 [2022-11-22 00:29:50,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,461 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:50,468 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:29:50,468 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:29:50,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:50,565 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:29:50,566 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:29:50,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:50,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:29:50,600 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:29:50,600 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:29:50,637 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:29:50,637 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 [2022-11-22 00:29:50,667 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:29:50,667 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 [2022-11-22 00:29:50,888 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 11 treesize of output 7 [2022-11-22 00:29:50,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:29:50,916 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 11 treesize of output 7 [2022-11-22 00:29:51,015 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-22 00:29:51,015 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 30 [2022-11-22 00:29:51,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 00:29:51,080 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-22 00:29:51,080 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 [2022-11-22 00:29:51,223 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-11-22 00:29:51,223 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 38 treesize of output 48 [2022-11-22 00:29:51,283 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-11-22 00:29:51,284 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 28 treesize of output 38 [2022-11-22 00:29:51,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:29:51,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:29:51,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:29:51,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:29:51,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:51,644 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:29:51,645 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 [2022-11-22 00:29:51,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:29:51,692 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 [2022-11-22 00:29:51,702 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 [2022-11-22 00:29:51,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:29:51,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:29:51,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:51,762 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:29:51,762 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 [2022-11-22 00:29:51,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:29:51,807 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 [2022-11-22 00:29:51,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:29:51,831 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 [2022-11-22 00:29:51,846 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 [2022-11-22 00:29:51,927 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 11 treesize of output 7 [2022-11-22 00:29:51,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:29:51,946 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 15 treesize of output 1 [2022-11-22 00:29:51,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:51,984 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:29:51,985 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 [2022-11-22 00:29:52,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:52,018 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 [2022-11-22 00:29:52,032 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 18 for LOIs [2022-11-22 00:29:52,040 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 [2022-11-22 00:29:52,046 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 [2022-11-22 00:29:52,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:29:52,072 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:29:52,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:29:52,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:29:52,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:52,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:29:52,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:52,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:29:52,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:29:52,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:52,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:52,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:29:52,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:52,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:29:52,175 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 36 treesize of output 23 [2022-11-22 00:29:52,178 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:30:08,909 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9107#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4))) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (not (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1)) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (= |ULTIMATE.start_main_~count~0#1| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|)) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (= (select |#valid| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|))' at error location [2022-11-22 00:30:08,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:30:08,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:30:08,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 56 [2022-11-22 00:30:08,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798651881] [2022-11-22 00:30:08,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:30:08,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-22 00:30:08,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:30:08,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-22 00:30:08,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=8286, Unknown=108, NotChecked=184, Total=8930 [2022-11-22 00:30:08,912 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 58 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 47 states have internal predecessors, (77), 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) [2022-11-22 00:30:19,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:30:19,690 INFO L93 Difference]: Finished difference Result 190 states and 202 transitions. [2022-11-22 00:30:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-22 00:30:19,692 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 47 states have internal predecessors, (77), 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 45 [2022-11-22 00:30:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:30:19,693 INFO L225 Difference]: With dead ends: 190 [2022-11-22 00:30:19,693 INFO L226 Difference]: Without dead ends: 190 [2022-11-22 00:30:19,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3408 ImplicationChecksByTransitivity, 63.7s TimeCoverageRelationStatistics Valid=779, Invalid=13157, Unknown=110, NotChecked=234, Total=14280 [2022-11-22 00:30:19,698 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1350 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 2616 mSolverCounterSat, 144 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2616 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-22 00:30:19,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 723 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2616 Invalid, 3 Unknown, 0 Unchecked, 4.0s Time] [2022-11-22 00:30:19,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-22 00:30:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 91. [2022-11-22 00:30:19,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.373134328358209) internal successors, (92), 85 states have internal predecessors, (92), 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) [2022-11-22 00:30:19,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2022-11-22 00:30:19,703 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 45 [2022-11-22 00:30:19,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:30:19,703 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2022-11-22 00:30:19,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 47 states have internal predecessors, (77), 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) [2022-11-22 00:30:19,704 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2022-11-22 00:30:19,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 00:30:19,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:30:19,705 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:30:19,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-22 00:30:19,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-22 00:30:19,913 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:30:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:30:19,914 INFO L85 PathProgramCache]: Analyzing trace with hash -818236249, now seen corresponding path program 1 times [2022-11-22 00:30:19,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:30:19,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413157243] [2022-11-22 00:30:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:30:19,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:30:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:30:25,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:30:25,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413157243] [2022-11-22 00:30:25,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413157243] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:30:25,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944453516] [2022-11-22 00:30:25,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:30:25,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:30:25,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:30:25,431 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:30:25,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-22 00:30:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:30:25,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 124 conjunts are in the unsatisfiable core [2022-11-22 00:30:25,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:30:25,866 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 [2022-11-22 00:30:26,246 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 5 treesize of output 3 [2022-11-22 00:30:26,560 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:30:26,560 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 11 treesize of output 11 [2022-11-22 00:30:26,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:27,098 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:30:27,098 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2022-11-22 00:30:27,494 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:30:27,494 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 26 treesize of output 27 [2022-11-22 00:30:27,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2022-11-22 00:30:27,877 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:30:27,877 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 53 treesize of output 24 [2022-11-22 00:30:27,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:30:27,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:30:27,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:30:28,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:28,578 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 14 treesize of output 16 [2022-11-22 00:30:28,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:28,604 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:30:28,605 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 63 treesize of output 57 [2022-11-22 00:30:28,636 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-22 00:30:28,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-22 00:30:28,666 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-22 00:30:28,667 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 [2022-11-22 00:30:29,922 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:30:29,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 91 treesize of output 68 [2022-11-22 00:30:29,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:29,935 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 27 treesize of output 27 [2022-11-22 00:30:29,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2022-11-22 00:30:30,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:30,153 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 14 treesize of output 16 [2022-11-22 00:30:30,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:30,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 37 [2022-11-22 00:30:30,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:30,208 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 41 treesize of output 37 [2022-11-22 00:30:30,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:30,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:30:30,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:30,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2022-11-22 00:30:30,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:30,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:30:30,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 18 [2022-11-22 00:30:30,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:30,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:30:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 00:30:30,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:30:31,049 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|))) (and (forall ((|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int)) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store .cse0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))) (forall ((|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_ArrVal_3218 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store .cse0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_3218) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false [2022-11-22 00:30:31,071 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3215 (Array Int Int)) (|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_ArrVal_3216 (Array Int Int)) (v_ArrVal_3218 (Array Int Int))) (<= (+ (select (select (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_3216))) (store .cse0 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse0 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 12) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_3215) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_3218) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))) (forall ((|ULTIMATE.start_dll_circular_insert_~last~1#1.offset| Int) (v_ArrVal_3216 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_3216))) (store .cse1 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select .cse1 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8)))) is different from false [2022-11-22 00:30:33,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944453516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:30:33,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [715515702] [2022-11-22 00:30:33,336 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-22 00:30:33,336 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:30:33,337 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:30:33,337 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:30:33,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:30:33,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,367 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 [2022-11-22 00:30:33,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,398 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 [2022-11-22 00:30:33,415 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 [2022-11-22 00:30:33,421 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 [2022-11-22 00:30:33,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:33,434 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 15 treesize of output 1 [2022-11-22 00:30:33,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:33,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:30:33,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:33,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:30:33,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:30:33,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:30:33,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:33,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,534 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 [2022-11-22 00:30:33,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,566 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 [2022-11-22 00:30:33,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,604 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 [2022-11-22 00:30:33,716 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:30:33,716 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 240 treesize of output 229 [2022-11-22 00:30:33,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:30:33,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:33,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:30:33,954 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 9 treesize of output 3 [2022-11-22 00:30:33,967 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 [2022-11-22 00:30:33,979 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 [2022-11-22 00:30:33,992 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:33,995 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:33,997 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:34,071 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:30:34,071 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 240 treesize of output 229 [2022-11-22 00:30:34,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:30:34,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:30:34,334 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 [2022-11-22 00:30:34,345 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 [2022-11-22 00:30:34,358 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 [2022-11-22 00:30:34,374 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:34,376 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:34,378 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:34,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-22 00:30:34,468 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 26 treesize of output 21 [2022-11-22 00:30:34,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:30:34,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:30:34,544 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:30:34,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 34 [2022-11-22 00:30:34,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:30:34,585 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:30:34,586 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 28 treesize of output 30 [2022-11-22 00:30:34,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:34,608 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 27 treesize of output 11 [2022-11-22 00:30:34,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:30:34,675 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:30:34,675 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 28 treesize of output 34 [2022-11-22 00:30:34,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:30:34,711 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:30:34,712 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 28 treesize of output 30 [2022-11-22 00:30:34,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:34,733 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 27 treesize of output 11 [2022-11-22 00:30:34,806 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 15 treesize of output 1 [2022-11-22 00:30:34,817 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 [2022-11-22 00:30:34,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:34,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:34,878 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 21 treesize of output 20 [2022-11-22 00:30:34,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:34,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:34,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:30:35,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:35,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:35,068 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:30:35,075 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:30:35,075 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:30:35,116 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:30:35,116 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 [2022-11-22 00:30:35,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:35,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:35,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:30:35,158 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:30:35,159 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:30:35,184 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:30:35,185 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 [2022-11-22 00:30:35,326 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:30:35,327 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 [2022-11-22 00:30:35,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:35,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:35,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:30:35,362 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:30:35,362 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:30:35,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:35,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:35,388 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:30:35,395 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:30:35,396 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:30:35,418 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:30:35,418 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 [2022-11-22 00:30:35,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:35,681 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 15 treesize of output 1 [2022-11-22 00:30:35,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:35,767 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-22 00:30:35,768 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 30 [2022-11-22 00:30:35,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:35,840 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-22 00:30:35,840 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 [2022-11-22 00:30:35,880 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 15 treesize of output 1 [2022-11-22 00:30:35,929 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-11-22 00:30:35,929 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 28 treesize of output 38 [2022-11-22 00:30:36,001 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-11-22 00:30:36,002 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 38 treesize of output 48 [2022-11-22 00:30:36,107 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 13 treesize of output 9 [2022-11-22 00:30:36,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 00:30:36,180 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 [2022-11-22 00:30:36,446 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:30:36,447 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 240 treesize of output 229 [2022-11-22 00:30:36,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:36,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:30:36,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:36,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-22 00:30:36,728 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 [2022-11-22 00:30:36,741 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 9 treesize of output 3 [2022-11-22 00:30:36,754 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 [2022-11-22 00:30:36,771 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:36,774 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:36,778 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:36,886 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:30:36,887 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 240 treesize of output 229 [2022-11-22 00:30:37,064 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 [2022-11-22 00:30:37,077 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 9 treesize of output 3 [2022-11-22 00:30:37,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:37,094 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 17 treesize of output 7 [2022-11-22 00:30:37,107 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 [2022-11-22 00:30:37,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:37,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:30:37,141 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:37,143 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:37,145 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:30:37,260 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 11 treesize of output 7 [2022-11-22 00:30:37,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:30:37,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:37,372 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:30:37,373 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 240 treesize of output 229 [2022-11-22 00:30:37,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:37,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:37,525 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 [2022-11-22 00:30:37,536 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 65 for LOIs [2022-11-22 00:30:37,567 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 [2022-11-22 00:30:37,590 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 [2022-11-22 00:30:37,645 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 11 treesize of output 7 [2022-11-22 00:30:37,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:37,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:30:37,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:37,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:30:37,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:37,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:30:37,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:37,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:37,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:37,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:30:37,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:37,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:30:37,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:30:37,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:30:37,907 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:30:56,303 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9710#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4))) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (= |ULTIMATE.start_main_~count~0#1| 0) (<= (+ |ULTIMATE.start_main_~#s~0#1.offset| 4) (select |#length| |ULTIMATE.start_main_~#s~0#1.base|)) (or (not (<= (+ |ULTIMATE.start_main_~ptr~0#1.offset| 12) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|))) (not (<= 0 (+ |ULTIMATE.start_main_~ptr~0#1.offset| 8)))) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|)) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (= (select |#valid| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|))' at error location [2022-11-22 00:30:56,303 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:30:56,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:30:56,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 58 [2022-11-22 00:30:56,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094291958] [2022-11-22 00:30:56,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:30:56,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-22 00:30:56,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:30:56,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-22 00:30:56,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=8739, Unknown=7, NotChecked=378, Total=9506 [2022-11-22 00:30:56,307 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 59 states, 48 states have (on average 1.625) internal successors, (78), 49 states have internal predecessors, (78), 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) [2022-11-22 00:31:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:07,390 INFO L93 Difference]: Finished difference Result 170 states and 182 transitions. [2022-11-22 00:31:07,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-22 00:31:07,390 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 48 states have (on average 1.625) internal successors, (78), 49 states have internal predecessors, (78), 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 45 [2022-11-22 00:31:07,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:07,391 INFO L225 Difference]: With dead ends: 170 [2022-11-22 00:31:07,391 INFO L226 Difference]: Without dead ends: 170 [2022-11-22 00:31:07,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3960 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=714, Invalid=13567, Unknown=7, NotChecked=474, Total=14762 [2022-11-22 00:31:07,393 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 1204 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 2838 mSolverCounterSat, 129 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2838 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:07,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 776 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 2838 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 00:31:07,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-22 00:31:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 93. [2022-11-22 00:31:07,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 69 states have (on average 1.3623188405797102) internal successors, (94), 87 states have internal predecessors, (94), 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) [2022-11-22 00:31:07,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2022-11-22 00:31:07,398 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 45 [2022-11-22 00:31:07,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:07,398 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2022-11-22 00:31:07,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 48 states have (on average 1.625) internal successors, (78), 49 states have internal predecessors, (78), 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) [2022-11-22 00:31:07,399 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2022-11-22 00:31:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-22 00:31:07,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:07,399 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:07,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-22 00:31:07,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-22 00:31:07,609 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:31:07,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1373249452, now seen corresponding path program 1 times [2022-11-22 00:31:07,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:07,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235770692] [2022-11-22 00:31:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:07,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 00:31:07,837 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:07,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235770692] [2022-11-22 00:31:07,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235770692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:31:07,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796513138] [2022-11-22 00:31:07,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:07,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:31:07,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:31:07,839 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:31:07,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-22 00:31:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:08,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 00:31:08,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:31:08,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:08,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 00:31:08,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:31:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 00:31:08,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796513138] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 00:31:08,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1298041601] [2022-11-22 00:31:08,387 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-22 00:31:08,387 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:31:08,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:31:08,388 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:31:08,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:31:08,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,412 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 [2022-11-22 00:31:08,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,446 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 [2022-11-22 00:31:08,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-22 00:31:08,464 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 [2022-11-22 00:31:08,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:31:08,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:31:08,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:31:08,491 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 19 treesize of output 1 [2022-11-22 00:31:08,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:31:08,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:31:08,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:31:08,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,532 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:31:08,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:31:08,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,566 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 [2022-11-22 00:31:08,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,604 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 [2022-11-22 00:31:08,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,637 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 [2022-11-22 00:31:08,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,700 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:31:08,700 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 [2022-11-22 00:31:08,735 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 [2022-11-22 00:31:08,749 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 [2022-11-22 00:31:08,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-22 00:31:08,778 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 9 treesize of output 3 [2022-11-22 00:31:08,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-22 00:31:08,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,851 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:31:08,851 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 [2022-11-22 00:31:08,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:31:08,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:08,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:31:08,912 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 9 treesize of output 3 [2022-11-22 00:31:08,926 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 [2022-11-22 00:31:08,938 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 [2022-11-22 00:31:09,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:09,087 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-11-22 00:31:09,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:09,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:09,107 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:09,108 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-11-22 00:31:09,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:09,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:09,131 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:09,132 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-11-22 00:31:09,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:09,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 238 [2022-11-22 00:31:09,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:09,338 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:31:09,339 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 261 treesize of output 257 [2022-11-22 00:31:09,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:09,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:09,385 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:31:09,385 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 261 treesize of output 261 [2022-11-22 00:31:09,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:09,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 238 [2022-11-22 00:31:09,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:09,719 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:31:09,720 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 261 treesize of output 261 [2022-11-22 00:31:09,739 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:09,756 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:31:09,757 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 249 treesize of output 245 [2022-11-22 00:31:09,981 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 [2022-11-22 00:31:09,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:31:10,006 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 15 treesize of output 1 [2022-11-22 00:31:10,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:10,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:10,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 00:31:10,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,214 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:10,219 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:31:10,220 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:31:10,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,238 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:10,245 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:31:10,245 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:31:10,265 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:31:10,265 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 [2022-11-22 00:31:10,295 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:31:10,296 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 [2022-11-22 00:31:10,434 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:31:10,435 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 [2022-11-22 00:31:10,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,460 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:10,466 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:31:10,466 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:31:10,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:10,495 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:31:10,496 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:31:10,514 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:31:10,515 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 [2022-11-22 00:31:10,739 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 15 treesize of output 1 [2022-11-22 00:31:10,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:10,770 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:31:10,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 28 [2022-11-22 00:31:10,786 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:10,802 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:31:10,802 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 33 treesize of output 28 [2022-11-22 00:31:10,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:31:10,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,867 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:10,873 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:31:10,874 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 46 treesize of output 40 [2022-11-22 00:31:10,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:10,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:10,899 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:31:10,899 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 46 treesize of output 40 [2022-11-22 00:31:10,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,000 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:31:11,000 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 [2022-11-22 00:31:11,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:31:11,045 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 [2022-11-22 00:31:11,056 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 [2022-11-22 00:31:11,066 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 9 treesize of output 3 [2022-11-22 00:31:11,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-22 00:31:11,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,112 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:31:11,112 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 [2022-11-22 00:31:11,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-22 00:31:11,159 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 [2022-11-22 00:31:11,169 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 9 treesize of output 3 [2022-11-22 00:31:11,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:31:11,194 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 [2022-11-22 00:31:11,332 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:11,333 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-11-22 00:31:11,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,348 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:11,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:11,349 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-11-22 00:31:11,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:11,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:31:11,372 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-11-22 00:31:11,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,438 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:31:11,438 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 [2022-11-22 00:31:11,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,467 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 [2022-11-22 00:31:11,476 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-11-22 00:31:11,483 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 [2022-11-22 00:31:11,487 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 [2022-11-22 00:31:11,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:31:11,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:31:11,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:31:11,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:31:11,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 00:31:11,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:31:11,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:31:11,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:31:11,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:11,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:31:11,571 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:31:20,375 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10329#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) (+ 4 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|))) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| 0) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (not (= (select |#valid| |ULTIMATE.start_dll_circular_insert_#t~mem16#1.base|) 1)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) |ULTIMATE.start_dll_circular_insert_#t~mem16#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|)) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (= |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| 0) (<= (+ |ULTIMATE.start_dll_circular_insert_~head#1.offset| 4) (select |#length| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (or (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) 0))) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (= 1 (select |#valid| |ULTIMATE.start_dll_circular_insert_~head#1.base|)) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= (+ 8 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (select |#length| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) (<= 0 |#StackHeapBarrier|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|)) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (= |#NULL.base| 0) (= |ULTIMATE.start_dll_circular_insert_#t~mem16#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~head#1.base|) |ULTIMATE.start_dll_circular_insert_~head#1.offset|)))' at error location [2022-11-22 00:31:20,375 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:31:20,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 00:31:20,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-11-22 00:31:20,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899325317] [2022-11-22 00:31:20,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 00:31:20,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 00:31:20,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:31:20,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 00:31:20,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1238, Unknown=0, NotChecked=0, Total=1406 [2022-11-22 00:31:20,377 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:31:20,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:31:20,640 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2022-11-22 00:31:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 00:31:20,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2022-11-22 00:31:20,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:31:20,645 INFO L225 Difference]: With dead ends: 81 [2022-11-22 00:31:20,645 INFO L226 Difference]: Without dead ends: 81 [2022-11-22 00:31:20,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=188, Invalid=1452, Unknown=0, NotChecked=0, Total=1640 [2022-11-22 00:31:20,646 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 00:31:20,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 349 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 00:31:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-22 00:31:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2022-11-22 00:31:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 61 states have (on average 1.3278688524590163) internal successors, (81), 75 states have internal predecessors, (81), 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) [2022-11-22 00:31:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2022-11-22 00:31:20,649 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 46 [2022-11-22 00:31:20,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:31:20,650 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2022-11-22 00:31:20,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:31:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2022-11-22 00:31:20,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-22 00:31:20,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:31:20,651 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:31:20,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-22 00:31:20,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-22 00:31:20,858 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:31:20,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:31:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -346017495, now seen corresponding path program 1 times [2022-11-22 00:31:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:31:20,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920509356] [2022-11-22 00:31:20,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:20,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:31:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:29,602 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:31:29,603 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:31:29,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920509356] [2022-11-22 00:31:29,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920509356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:31:29,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967810593] [2022-11-22 00:31:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:31:29,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:31:29,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:31:29,604 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:31:29,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-22 00:31:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:31:29,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 148 conjunts are in the unsatisfiable core [2022-11-22 00:31:29,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:31:29,954 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 [2022-11-22 00:31:30,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:30,289 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:31:30,290 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 [2022-11-22 00:31:30,593 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 [2022-11-22 00:31:30,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:31:30,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:30,875 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 00:31:30,876 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 1 case distinctions, treesize of input 16 treesize of output 14 [2022-11-22 00:31:31,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-22 00:31:31,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:31:31,482 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:31:31,483 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 44 treesize of output 41 [2022-11-22 00:31:31,494 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 18 treesize of output 20 [2022-11-22 00:31:31,900 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:31:31,900 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 37 treesize of output 36 [2022-11-22 00:31:31,907 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 18 treesize of output 20 [2022-11-22 00:31:32,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-11-22 00:31:32,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 35 [2022-11-22 00:31:32,342 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:31:32,342 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 27 [2022-11-22 00:31:32,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:32,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:32,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:33,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:33,123 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:31:33,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 58 [2022-11-22 00:31:33,144 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-22 00:31:33,144 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 [2022-11-22 00:31:33,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:33,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:33,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-22 00:31:34,460 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:31:34,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 88 [2022-11-22 00:31:34,475 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 35 treesize of output 30 [2022-11-22 00:31:34,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:34,482 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 27 treesize of output 27 [2022-11-22 00:31:34,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-22 00:31:34,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:34,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 39 [2022-11-22 00:31:34,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-22 00:31:34,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:34,741 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 [2022-11-22 00:31:34,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:34,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 39 [2022-11-22 00:31:34,791 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 18 treesize of output 20 [2022-11-22 00:31:34,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:31:34,802 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 [2022-11-22 00:31:34,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2022-11-22 00:31:34,990 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 18 treesize of output 20 [2022-11-22 00:31:34,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:35,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:35,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:31:35,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:31:35,436 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:31:35,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:31:35,575 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3684 (Array Int Int)) (v_ArrVal_3685 (Array Int Int)) (v_ArrVal_3686 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (select (select (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_3684) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_3686) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_3685) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8)))) is different from false [2022-11-22 00:31:50,776 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3681 (Array Int Int)) (v_ArrVal_3682 (Array Int Int)) (v_ArrVal_3683 (Array Int Int)) (v_ArrVal_3684 (Array Int Int)) (v_ArrVal_3685 (Array Int Int)) (v_ArrVal_3686 (Array Int Int)) (v_ArrVal_3675 (Array Int Int)) (v_ArrVal_3674 Int) (v_ArrVal_3677 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|))) (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| v_ArrVal_3674)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_3682) .cse0 v_ArrVal_3684) (select (select (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_3677) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_3683) .cse0 v_ArrVal_3686) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (+ (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_3675) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_3681) .cse0 v_ArrVal_3685) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 8))))) is different from false [2022-11-22 00:32:08,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967810593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:32:08,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2109431825] [2022-11-22 00:32:08,622 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-22 00:32:08,622 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:32:08,623 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:32:08,623 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:32:08,623 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:32:08,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,643 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 [2022-11-22 00:32:08,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,670 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 [2022-11-22 00:32:08,680 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 [2022-11-22 00:32:08,684 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 [2022-11-22 00:32:08,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:08,695 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 15 treesize of output 1 [2022-11-22 00:32:08,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:08,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:08,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:32:08,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:32:08,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:32:08,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:32:08,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:08,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,765 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 [2022-11-22 00:32:08,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,793 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 [2022-11-22 00:32:08,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:08,818 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 [2022-11-22 00:32:08,927 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:32:08,927 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 240 treesize of output 229 [2022-11-22 00:32:09,145 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 [2022-11-22 00:32:09,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:32:09,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:32:09,177 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 [2022-11-22 00:32:09,187 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 [2022-11-22 00:32:09,200 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:09,202 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:09,204 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:09,263 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:32:09,263 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 240 treesize of output 229 [2022-11-22 00:32:09,361 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 [2022-11-22 00:32:09,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:32:09,382 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 [2022-11-22 00:32:09,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:32:09,406 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 [2022-11-22 00:32:09,419 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:09,421 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:09,512 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:09,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:09,515 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 262 [2022-11-22 00:32:09,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:09,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:09,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:09,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:09,534 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 276 treesize of output 263 [2022-11-22 00:32:09,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:09,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:09,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:09,555 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 257 [2022-11-22 00:32:09,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:09,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 260 treesize of output 238 [2022-11-22 00:32:09,676 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:09,699 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:32:09,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 261 treesize of output 261 [2022-11-22 00:32:09,718 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:09,736 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:32:09,736 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 249 treesize of output 245 [2022-11-22 00:32:09,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:09,914 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 260 treesize of output 238 [2022-11-22 00:32:09,936 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:09,961 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-22 00:32:09,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 261 treesize of output 261 [2022-11-22 00:32:09,984 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:10,002 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 00:32:10,003 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 249 treesize of output 245 [2022-11-22 00:32:10,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:10,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:10,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:32:10,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:10,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:32:10,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:10,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:32:10,319 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 19 treesize of output 1 [2022-11-22 00:32:10,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:10,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:10,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:10,414 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:10,415 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:32:10,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:10,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:10,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:10,450 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:10,450 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:32:10,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:32:10,479 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 [2022-11-22 00:32:10,507 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:10,507 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 [2022-11-22 00:32:10,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:10,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:10,609 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:10,616 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:10,616 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:32:10,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:32:10,647 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 [2022-11-22 00:32:10,682 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:10,682 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 [2022-11-22 00:32:10,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:10,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:10,704 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:10,711 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:10,711 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:32:10,994 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 11 treesize of output 7 [2022-11-22 00:32:11,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:32:11,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:11,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 00:32:11,109 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-22 00:32:11,109 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 30 [2022-11-22 00:32:11,153 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-11-22 00:32:11,154 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 [2022-11-22 00:32:11,248 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-11-22 00:32:11,249 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 38 treesize of output 48 [2022-11-22 00:32:11,274 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 [2022-11-22 00:32:11,336 INFO L321 Elim1Store]: treesize reduction 31, result has 32.6 percent of original size [2022-11-22 00:32:11,337 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 28 treesize of output 38 [2022-11-22 00:32:11,462 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 [2022-11-22 00:32:11,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:11,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:12,150 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:32:12,151 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 240 treesize of output 229 [2022-11-22 00:32:12,295 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 [2022-11-22 00:32:12,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:32:12,321 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 [2022-11-22 00:32:12,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:32:12,347 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 [2022-11-22 00:32:12,366 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:12,368 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:12,371 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:12,451 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:32:12,452 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 240 treesize of output 229 [2022-11-22 00:32:12,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:32:12,665 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 [2022-11-22 00:32:12,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:32:12,690 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 [2022-11-22 00:32:12,702 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 [2022-11-22 00:32:12,716 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:12,718 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:12,721 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:12,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:12,803 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 15 treesize of output 1 [2022-11-22 00:32:12,811 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 11 treesize of output 7 [2022-11-22 00:32:12,876 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:32:12,877 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 240 treesize of output 229 [2022-11-22 00:32:13,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:13,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:13,073 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 [2022-11-22 00:32:13,085 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-11-22 00:32:13,092 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 [2022-11-22 00:32:13,098 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 [2022-11-22 00:32:13,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:32:13,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:32:13,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:32:13,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:13,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:32:13,148 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:13,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:13,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:32:13,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:13,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:13,175 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 36 treesize of output 23 [2022-11-22 00:32:13,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:13,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:13,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:13,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:32:13,198 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 00:32:31,079 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10783#(and (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_insert_~data#1|) (<= |ULTIMATE.start_main_~data~0#1| 1) (<= 0 |#NULL.base|) (<= 2 |ULTIMATE.start_main_~len~0#1|) (<= |ULTIMATE.start_dll_circular_insert_#in~head#1.offset| 0) (<= 2 |ULTIMATE.start_dll_circular_create_#in~len#1|) (<= |ULTIMATE.start_dll_circular_insert_~data#1| 1) (= (select |#valid| |ULTIMATE.start_main_~ptr~0#1.base|) 1) (<= 1 |ULTIMATE.start_dll_circular_insert_#in~data#1|) (<= 1 |ULTIMATE.start_dll_circular_create_~len#1|) (= (select |#valid| |ULTIMATE.start_main_~#s~0#1.base|) 1) (<= |ULTIMATE.start_dll_circular_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_~last~0#1.offset|) (<= |ULTIMATE.start_dll_circular_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_dll_circular_insert_#in~head#1.base|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (<= |ULTIMATE.start_dll_circular_create_~last~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4))) (<= |ULTIMATE.start_dll_circular_insert_~index#1| 0) (<= |ULTIMATE.start_dll_circular_insert_#in~data#1| 1) (<= 0 (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 4)) |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.offset|) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~len~0#1| 2) (<= 0 |ULTIMATE.start_dll_circular_insert_~head#1.base|) (= |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_main_~ptr~0#1.offset| 12) (select |#length| |ULTIMATE.start_main_~ptr~0#1.base|)) (<= 1 |ULTIMATE.start_dll_circular_create_#in~data#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_dll_circular_create_#res#1.offset|) (<= 1 |ULTIMATE.start_dll_circular_create_~data#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (<= |ULTIMATE.start_dll_circular_insert_~new_node~0#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#res#1.offset| 0) (<= |ULTIMATE.start_dll_circular_insert_~head#1.offset| 0) (<= |ULTIMATE.start_dll_circular_create_#in~len#1| 2) (<= 0 |#NULL.offset|) (<= (+ |ULTIMATE.start_dll_circular_insert_~last~1#1.offset| 8) (select |#length| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|)) (<= 1 |ULTIMATE.start_main_~data~0#1|) (<= |ULTIMATE.start_dll_circular_create_~len#1| 1) (= (select |#valid| |ULTIMATE.start_dll_circular_insert_~last~1#1.base|) 1) (<= |ULTIMATE.start_dll_circular_create_~data#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (not (= (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 8)) |ULTIMATE.start_main_~data~0#1|)) (<= 0 |ULTIMATE.start_dll_circular_create_~head~0#1.offset|) (<= 0 |ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset|) (<= 0 (+ |ULTIMATE.start_main_~ptr~0#1.offset| 8)))' at error location [2022-11-22 00:32:31,079 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 00:32:31,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:31,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 30] total 60 [2022-11-22 00:32:31,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438718059] [2022-11-22 00:32:31,079 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 00:32:31,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-22 00:32:31,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:31,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-22 00:32:31,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=8809, Unknown=140, NotChecked=382, Total=9702 [2022-11-22 00:32:31,082 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 61 states, 51 states have (on average 1.588235294117647) internal successors, (81), 52 states have internal predecessors, (81), 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) [2022-11-22 00:32:42,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:42,735 INFO L93 Difference]: Finished difference Result 153 states and 165 transitions. [2022-11-22 00:32:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-22 00:32:42,736 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 51 states have (on average 1.588235294117647) internal successors, (81), 52 states have internal predecessors, (81), 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 [2022-11-22 00:32:42,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:42,737 INFO L225 Difference]: With dead ends: 153 [2022-11-22 00:32:42,737 INFO L226 Difference]: Without dead ends: 153 [2022-11-22 00:32:42,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 118 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3556 ImplicationChecksByTransitivity, 66.2s TimeCoverageRelationStatistics Valid=750, Invalid=12922, Unknown=142, NotChecked=466, Total=14280 [2022-11-22 00:32:42,739 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 637 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 88 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:42,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 925 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 2443 Invalid, 2 Unknown, 0 Unchecked, 4.1s Time] [2022-11-22 00:32:42,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-22 00:32:42,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 85. [2022-11-22 00:32:42,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 65 states have (on average 1.3076923076923077) internal successors, (85), 79 states have internal predecessors, (85), 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) [2022-11-22 00:32:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2022-11-22 00:32:42,743 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 47 [2022-11-22 00:32:42,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:42,743 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2022-11-22 00:32:42,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 51 states have (on average 1.588235294117647) internal successors, (81), 52 states have internal predecessors, (81), 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) [2022-11-22 00:32:42,744 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2022-11-22 00:32:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-22 00:32:42,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:42,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:42,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:42,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:42,952 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:32:42,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:42,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1978330816, now seen corresponding path program 1 times [2022-11-22 00:32:42,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:42,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848010313] [2022-11-22 00:32:42,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:42,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:42,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:43,654 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:32:43,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:43,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848010313] [2022-11-22 00:32:43,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848010313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:32:43,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797626389] [2022-11-22 00:32:43,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:43,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:43,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:43,659 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:43,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-22 00:32:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:44,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-22 00:32:44,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:44,074 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 [2022-11-22 00:32:44,128 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_node_create_~temp~0#1.base| 0)) (exists ((v_ArrVal_3911 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_3911)))) is different from true [2022-11-22 00:32:44,150 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3911 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_3911))) (not (= |c_node_create_#res#1.base| 0))) is different from true [2022-11-22 00:32:44,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-22 00:32:44,206 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_3912 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_3912))) (not (= |node_create_~temp~0#1.base| 0)))) is different from true [2022-11-22 00:32:44,235 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 [2022-11-22 00:32:44,265 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_3913 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_3913))))) is different from true [2022-11-22 00:32:44,291 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 [2022-11-22 00:32:44,355 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-22 00:32:44,355 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 [2022-11-22 00:32:44,393 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 16 treesize of output 8 [2022-11-22 00:32:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 15 not checked. [2022-11-22 00:32:44,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:44,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:32:45,222 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-22 00:32:45,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797626389] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 00:32:45,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 00:32:45,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16, 11] total 29 [2022-11-22 00:32:45,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276980625] [2022-11-22 00:32:45,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 00:32:45,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 00:32:45,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 00:32:45,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 00:32:45,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=531, Unknown=4, NotChecked=196, Total=812 [2022-11-22 00:32:45,225 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:32:45,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 00:32:45,427 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2022-11-22 00:32:45,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 00:32:45,428 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2022-11-22 00:32:45,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 00:32:45,428 INFO L225 Difference]: With dead ends: 78 [2022-11-22 00:32:45,429 INFO L226 Difference]: Without dead ends: 76 [2022-11-22 00:32:45,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 78 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=103, Invalid=665, Unknown=4, NotChecked=220, Total=992 [2022-11-22 00:32:45,429 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 00:32:45,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 106 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 00:32:45,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-22 00:32:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-11-22 00:32:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 56 states have (on average 1.3214285714285714) internal successors, (74), 70 states have internal predecessors, (74), 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) [2022-11-22 00:32:45,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2022-11-22 00:32:45,433 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 48 [2022-11-22 00:32:45,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 00:32:45,433 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2022-11-22 00:32:45,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 6 states have internal predecessors, (32), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-22 00:32:45,434 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2022-11-22 00:32:45,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 00:32:45,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 00:32:45,435 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 00:32:45,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-22 00:32:45,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:45,648 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 69 more)] === [2022-11-22 00:32:45,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 00:32:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash -282437712, now seen corresponding path program 1 times [2022-11-22 00:32:45,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 00:32:45,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372386690] [2022-11-22 00:32:45,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:45,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 00:32:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:49,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:32:49,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 00:32:49,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372386690] [2022-11-22 00:32:49,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372386690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:32:49,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744070851] [2022-11-22 00:32:49,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 00:32:49,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 00:32:49,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 [2022-11-22 00:32:49,552 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 00:32:49,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59769d7e-c70e-44df-9dbd-96f88d2dda62/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-22 00:32:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 00:32:49,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 122 conjunts are in the unsatisfiable core [2022-11-22 00:32:49,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 00:32:49,921 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 [2022-11-22 00:32:49,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-11-22 00:32:50,093 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:32:50,094 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 [2022-11-22 00:32:50,275 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 [2022-11-22 00:32:50,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:50,503 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-22 00:32:50,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2022-11-22 00:32:50,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:32:50,959 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:32:50,959 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 43 treesize of output 40 [2022-11-22 00:32:51,325 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 00:32:51,326 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 36 treesize of output 35 [2022-11-22 00:32:51,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 40 [2022-11-22 00:32:51,647 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:51,648 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 58 treesize of output 25 [2022-11-22 00:32:51,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-22 00:32:51,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:51,675 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 16 treesize of output 10 [2022-11-22 00:32:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:52,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:32:52,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:52,164 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:32:52,164 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 66 treesize of output 56 [2022-11-22 00:32:52,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:52,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:52,190 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-11-22 00:32:52,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 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 [2022-11-22 00:32:53,118 INFO L321 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2022-11-22 00:32:53,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 106 treesize of output 62 [2022-11-22 00:32:53,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:53,131 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 33 treesize of output 33 [2022-11-22 00:32:53,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:53,307 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:32:53,307 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 43 treesize of output 45 [2022-11-22 00:32:53,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:53,336 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 14 treesize of output 16 [2022-11-22 00:32:53,521 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-22 00:32:53,521 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 3 case distinctions, treesize of input 100 treesize of output 75 [2022-11-22 00:32:53,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:53,536 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 [2022-11-22 00:32:53,711 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-22 00:32:53,711 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 62 [2022-11-22 00:32:53,728 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 [2022-11-22 00:32:53,872 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 15 treesize of output 7 [2022-11-22 00:32:54,048 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:54,048 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 63 treesize of output 26 [2022-11-22 00:32:54,055 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 00:32:54,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 00:32:54,080 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4165 (Array Int Int)) (v_ArrVal_4166 (Array Int Int))) (= (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4165))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4166) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) 1)) is different from false [2022-11-22 00:32:54,473 INFO L321 Elim1Store]: treesize reduction 5, result has 86.8 percent of original size [2022-11-22 00:32:54,474 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 42 treesize of output 41 [2022-11-22 00:32:54,480 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4163 (Array Int Int)) (v_ArrVal_4164 (Array Int Int)) (v_ArrVal_4165 (Array Int Int)) (v_ArrVal_4166 (Array Int Int))) (= (select (let ((.cse0 (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4163) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4165))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4164) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4166) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) is different from false [2022-11-22 00:32:54,492 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4163 (Array Int Int)) (v_ArrVal_4164 (Array Int Int)) (v_ArrVal_4165 (Array Int Int)) (v_ArrVal_4166 (Array Int Int)) (v_ArrVal_4159 (Array Int Int))) (= (select (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base|) |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4163) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4165))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~snd_to_last~0#1.base| v_ArrVal_4159) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4164) |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4166) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) is different from false [2022-11-22 00:32:54,837 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4163 (Array Int Int)) (v_ArrVal_4164 (Array Int Int)) (v_ArrVal_4165 (Array Int Int)) (v_ArrVal_4166 (Array Int Int)) (v_ArrVal_4159 (Array Int Int))) (= |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (let ((.cse1 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base|))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset|))) (select (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| (store .cse1 |c_ULTIMATE.start_dll_circular_insert_~last~1#1.offset| |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4163) .cse2 v_ArrVal_4165))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~last~1#1.base| v_ArrVal_4159) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4164) .cse2 v_ArrVal_4166) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) is different from false [2022-11-22 00:32:54,850 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4163 (Array Int Int)) (v_ArrVal_4164 (Array Int Int)) (v_ArrVal_4165 (Array Int Int)) (v_ArrVal_4166 (Array Int Int)) (v_ArrVal_4159 (Array Int Int))) (= |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse2 (select |c_#memory_$Pointer$.base| .cse1)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse4 (select .cse2 .cse3))) (select (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| .cse1 (store .cse2 .cse3 |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base|)) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4163) .cse4 v_ArrVal_4165))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4159) |c_ULTIMATE.start_dll_circular_insert_~new_node~0#1.base| v_ArrVal_4164) .cse4 v_ArrVal_4166) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))))) is different from false [2022-11-22 00:32:54,860 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4163 (Array Int Int)) (v_ArrVal_4164 (Array Int Int)) (v_ArrVal_4165 (Array Int Int)) (v_ArrVal_4166 (Array Int Int)) (v_ArrVal_4159 (Array Int Int))) (= (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse2 (select |c_#memory_$Pointer$.base| .cse1)) (.cse3 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse4 (select .cse2 .cse3))) (select (let ((.cse0 (store (store (store |c_#memory_$Pointer$.base| .cse1 (store .cse2 .cse3 |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base|)) |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base| v_ArrVal_4163) .cse4 v_ArrVal_4165))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4159) |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base| v_ArrVal_4164) .cse4 v_ArrVal_4166) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) |c_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base|)) is different from false [2022-11-22 00:32:54,961 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4163 (Array Int Int)) (|v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_47| Int) (v_ArrVal_4175 (Array Int Int)) (v_ArrVal_4164 (Array Int Int)) (v_ArrVal_4176 (Array Int Int)) (v_ArrVal_4165 (Array Int Int)) (v_ArrVal_4166 (Array Int Int)) (v_ArrVal_4159 (Array Int Int))) (or (= (let ((.cse1 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_47| v_ArrVal_4176))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_47| v_ArrVal_4175)) (.cse2 (select (select .cse1 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse3 (select .cse1 .cse2)) (.cse4 (select (select .cse6 |c_ULTIMATE.start_dll_circular_insert_~head#1.base|) |c_ULTIMATE.start_dll_circular_insert_~head#1.offset|))) (let ((.cse5 (select .cse3 .cse4))) (select (let ((.cse0 (store (store (store .cse1 .cse2 (store .cse3 .cse4 |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_47|)) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_47| v_ArrVal_4163) .cse5 v_ArrVal_4165))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))) (select (select (store (store (store .cse6 .cse2 v_ArrVal_4159) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_47| v_ArrVal_4164) .cse5 v_ArrVal_4166) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)))))) |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_47|) (not (= (select |c_#valid| |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_47|) 0)) (not (< |v_ULTIMATE.start_dll_circular_insert_#t~ret9#1.base_47| |c_#StackHeapBarrier|)))) is different from false [2022-11-22 00:32:54,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744070851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 00:32:54,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1289414729] [2022-11-22 00:32:54,965 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2022-11-22 00:32:54,965 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 00:32:54,966 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 00:32:54,966 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 00:32:54,966 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 00:32:54,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:54,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:54,989 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 [2022-11-22 00:32:55,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,023 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 [2022-11-22 00:32:55,034 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 [2022-11-22 00:32:55,038 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 [2022-11-22 00:32:55,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:32:55,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:55,055 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 [2022-11-22 00:32:55,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:32:55,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-22 00:32:55,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:55,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 00:32:55,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:32:55,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-11-22 00:32:55,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,128 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 [2022-11-22 00:32:55,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,165 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 [2022-11-22 00:32:55,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,198 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 [2022-11-22 00:32:55,316 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:32:55,317 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 240 treesize of output 229 [2022-11-22 00:32:55,523 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 15 treesize of output 7 [2022-11-22 00:32:55,534 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 [2022-11-22 00:32:55,544 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 [2022-11-22 00:32:55,557 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 [2022-11-22 00:32:55,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-22 00:32:55,583 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:55,584 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:55,645 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-22 00:32:55,645 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 240 treesize of output 229 [2022-11-22 00:32:55,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2022-11-22 00:32:55,852 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 9 treesize of output 3 [2022-11-22 00:32:55,863 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 [2022-11-22 00:32:55,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:55,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-11-22 00:32:55,887 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 [2022-11-22 00:32:55,900 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:55,902 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:55,904 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-22 00:32:55,949 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 26 treesize of output 21 [2022-11-22 00:32:55,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21 [2022-11-22 00:32:55,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 11 [2022-11-22 00:32:56,003 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:56,016 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:32:56,016 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 28 treesize of output 30 [2022-11-22 00:32:56,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:56,051 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:32:56,051 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 28 treesize of output 34 [2022-11-22 00:32:56,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,073 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 27 treesize of output 11 [2022-11-22 00:32:56,118 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:56,131 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 00:32:56,131 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 28 treesize of output 30 [2022-11-22 00:32:56,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:56,164 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 00:32:56,165 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 28 treesize of output 34 [2022-11-22 00:32:56,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,182 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 27 treesize of output 11 [2022-11-22 00:32:56,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-22 00:32:56,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-22 00:32:56,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-22 00:32:56,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,282 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 21 treesize of output 20 [2022-11-22 00:32:56,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-11-22 00:32:56,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-22 00:32:56,377 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:56,377 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 [2022-11-22 00:32:56,398 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:32:56,398 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 [2022-11-22 00:32:56,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,420 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:56,425 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:56,425 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:32:56,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:56,453 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:56,453 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:32:56,520 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 00:32:56,520 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 [2022-11-22 00:32:56,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:56,552 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:56,552 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:32:56,577 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:56,577 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 [2022-11-22 00:32:56,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,601 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:56,608 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 00:32:56,608 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 3 case distinctions, treesize of input 24 treesize of output 10 [2022-11-22 00:32:56,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:56,926 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:57,099 INFO L321 Elim1Store]: treesize reduction 95, result has 49.7 percent of original size [2022-11-22 00:32:57,099 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 4 new quantified variables, introduced 10 case distinctions, treesize of input 354 treesize of output 411 [2022-11-22 00:32:57,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:32:57,130 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:32:57,237 INFO L321 Elim1Store]: treesize reduction 103, result has 36.0 percent of original size [2022-11-22 00:32:57,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 370 treesize of output 374 [2022-11-22 00:32:57,301 INFO L321 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2022-11-22 00:32:57,302 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 318 treesize of output 310 [2022-11-22 00:33:28,397 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:28,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:28,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:28,508 INFO L321 Elim1Store]: treesize reduction 65, result has 20.7 percent of original size [2022-11-22 00:33:28,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41480 treesize of output 36463 [2022-11-22 00:33:29,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:29,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:29,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 00:33:29,850 INFO L321 Elim1Store]: treesize reduction 60, result has 26.8 percent of original size [2022-11-22 00:33:29,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40352 treesize of output 37607 [2022-11-22 00:33:31,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 00:33:31,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39415 treesize of output 38431