./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-simple/sll2n_append_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_append_equal.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f218eac2d2b52810cb44bb8b3f3f80463ec7e46c8818b20f079ed947cc8e9fd0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 14:27:45,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 14:27:45,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 14:27:45,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 14:27:45,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 14:27:45,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 14:27:45,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 14:27:45,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 14:27:45,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 14:27:45,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 14:27:45,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 14:27:45,416 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 14:27:45,416 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 14:27:45,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 14:27:45,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 14:27:45,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 14:27:45,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 14:27:45,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 14:27:45,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 14:27:45,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 14:27:45,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 14:27:45,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 14:27:45,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 14:27:45,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 14:27:45,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 14:27:45,433 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 14:27:45,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 14:27:45,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 14:27:45,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 14:27:45,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 14:27:45,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 14:27:45,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 14:27:45,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 14:27:45,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 14:27:45,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 14:27:45,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 14:27:45,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 14:27:45,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 14:27:45,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 14:27:45,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 14:27:45,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 14:27:45,441 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 14:27:45,471 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 14:27:45,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 14:27:45,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 14:27:45,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 14:27:45,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 14:27:45,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 14:27:45,473 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 14:27:45,473 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 14:27:45,473 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 14:27:45,473 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 14:27:45,474 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 14:27:45,474 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 14:27:45,474 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 14:27:45,474 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 14:27:45,474 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 14:27:45,475 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 14:27:45,475 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 14:27:45,475 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 14:27:45,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 14:27:45,476 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 14:27:45,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 14:27:45,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 14:27:45,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 14:27:45,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 14:27:45,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 14:27:45,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 14:27:45,477 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 14:27:45,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 14:27:45,477 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 14:27:45,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 14:27:45,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 14:27:45,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 14:27:45,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:27:45,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 14:27:45,478 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 14:27:45,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 14:27:45,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 14:27:45,479 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 14:27:45,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 14:27:45,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 14:27:45,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 14:27:45,479 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_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f218eac2d2b52810cb44bb8b3f3f80463ec7e46c8818b20f079ed947cc8e9fd0 [2022-12-14 14:27:45,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 14:27:45,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 14:27:45,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 14:27:45,720 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 14:27:45,721 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 14:27:45,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/list-simple/sll2n_append_equal.i [2022-12-14 14:27:48,302 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 14:27:48,496 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 14:27:48,497 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/sv-benchmarks/c/list-simple/sll2n_append_equal.i [2022-12-14 14:27:48,508 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/data/162a2ff5f/b48c798ff2354e0098d04384f496a080/FLAGa393d78a2 [2022-12-14 14:27:48,523 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/data/162a2ff5f/b48c798ff2354e0098d04384f496a080 [2022-12-14 14:27:48,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 14:27:48,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 14:27:48,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 14:27:48,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 14:27:48,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 14:27:48,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41aa3a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48, skipping insertion in model container [2022-12-14 14:27:48,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,541 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 14:27:48,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 14:27:48,823 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_6977097a-0e89-48a4-86c5-d4b46360c036/sv-benchmarks/c/list-simple/sll2n_append_equal.i[24197,24210] [2022-12-14 14:27:48,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:27:48,835 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 14:27:48,869 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_6977097a-0e89-48a4-86c5-d4b46360c036/sv-benchmarks/c/list-simple/sll2n_append_equal.i[24197,24210] [2022-12-14 14:27:48,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 14:27:48,894 INFO L208 MainTranslator]: Completed translation [2022-12-14 14:27:48,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48 WrapperNode [2022-12-14 14:27:48,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 14:27:48,895 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 14:27:48,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 14:27:48,896 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 14:27:48,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,934 INFO L138 Inliner]: procedures = 127, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 118 [2022-12-14 14:27:48,935 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 14:27:48,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 14:27:48,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 14:27:48,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 14:27:48,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,959 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 14:27:48,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 14:27:48,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 14:27:48,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 14:27:48,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (1/1) ... [2022-12-14 14:27:48,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 14:27:48,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:27:48,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 14:27:48,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 14:27:49,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 14:27:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 14:27:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2022-12-14 14:27:49,029 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2022-12-14 14:27:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 14:27:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 14:27:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 14:27:49,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 14:27:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 14:27:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 14:27:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 14:27:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 14:27:49,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 14:27:49,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 14:27:49,135 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 14:27:49,137 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 14:27:49,302 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 14:27:49,332 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 14:27:49,332 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 14:27:49,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:27:49 BoogieIcfgContainer [2022-12-14 14:27:49,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 14:27:49,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 14:27:49,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 14:27:49,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 14:27:49,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 02:27:48" (1/3) ... [2022-12-14 14:27:49,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27620270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:27:49, skipping insertion in model container [2022-12-14 14:27:49,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 02:27:48" (2/3) ... [2022-12-14 14:27:49,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27620270 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 02:27:49, skipping insertion in model container [2022-12-14 14:27:49,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 02:27:49" (3/3) ... [2022-12-14 14:27:49,341 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2022-12-14 14:27:49,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 14:27:49,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 14:27:49,389 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 14:27:49,394 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@520c194c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 14:27:49,394 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 14:27:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 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) [2022-12-14 14:27:49,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 14:27:49,403 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:27:49,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:27:49,404 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:27:49,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:27:49,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1151333058, now seen corresponding path program 1 times [2022-12-14 14:27:49,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:27:49,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713760296] [2022-12-14 14:27:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:49,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:27:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:49,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:27:49,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:27:49,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713760296] [2022-12-14 14:27:49,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713760296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:27:49,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:27:49,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:27:49,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027288224] [2022-12-14 14:27:49,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:27:49,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:27:49,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:27:49,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:27:49,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:27:49,660 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-12-14 14:27:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:27:49,697 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2022-12-14 14:27:49,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:27:49,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2022-12-14 14:27:49,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:27:49,704 INFO L225 Difference]: With dead ends: 45 [2022-12-14 14:27:49,704 INFO L226 Difference]: Without dead ends: 22 [2022-12-14 14:27:49,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:27:49,709 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:27:49,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:27:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-12-14 14:27:49,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-12-14 14:27:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:27:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-12-14 14:27:49,748 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2022-12-14 14:27:49,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:27:49,748 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-12-14 14:27:49,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2022-12-14 14:27:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-12-14 14:27:49,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 14:27:49,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:27:49,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:27:49,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:27:49,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:27:49,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:27:49,751 INFO L85 PathProgramCache]: Analyzing trace with hash 61820946, now seen corresponding path program 1 times [2022-12-14 14:27:49,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:27:49,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168808136] [2022-12-14 14:27:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:49,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:27:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:27:49,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:27:49,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168808136] [2022-12-14 14:27:49,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168808136] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:27:49,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127754289] [2022-12-14 14:27:49,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:49,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:49,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:27:49,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:27:49,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:27:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:50,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 14:27:50,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:27:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:27:50,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:27:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:27:50,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127754289] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 14:27:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1253210265] [2022-12-14 14:27:50,129 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 14:27:50,130 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:27:50,133 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:27:50,137 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:27:50,137 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:27:50,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,220 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:27:50,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 26 [2022-12-14 14:27:50,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,256 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:27:50,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:27:50,314 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 [2022-12-14 14:27:50,319 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 [2022-12-14 14:27:50,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,336 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 16 treesize of output 17 [2022-12-14 14:27:50,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,344 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 20 treesize of output 9 [2022-12-14 14:27:50,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,351 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 20 treesize of output 9 [2022-12-14 14:27:50,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:27:50,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,393 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 [2022-12-14 14:27:50,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:27:50,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,473 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 [2022-12-14 14:27:50,533 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:50,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:27:50,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 14:27:50,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:50,555 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:27:50,615 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 [2022-12-14 14:27:50,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 14:27:50,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:50,645 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 [2022-12-14 14:27:50,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:50,699 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 [2022-12-14 14:27:50,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:50,717 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 [2022-12-14 14:27:50,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:50,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:50,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:50,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 202 [2022-12-14 14:27:50,826 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:50,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 204 [2022-12-14 14:27:50,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:50,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 208 [2022-12-14 14:27:50,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:50,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:50,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:50,974 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 [2022-12-14 14:27:50,982 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 [2022-12-14 14:27:51,029 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 [2022-12-14 14:27:51,037 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:51,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:51,057 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 [2022-12-14 14:27:51,066 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 7 treesize of output 3 [2022-12-14 14:27:51,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:51,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 202 [2022-12-14 14:27:51,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:51,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 204 [2022-12-14 14:27:51,171 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:51,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 208 [2022-12-14 14:27:51,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:51,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:51,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:51,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:51,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 14:27:51,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 14:27:51,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:27:51,654 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-12-14 14:27:51,659 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 [2022-12-14 14:27:51,663 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 [2022-12-14 14:27:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:51,676 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 16 treesize of output 17 [2022-12-14 14:27:51,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:51,682 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 20 treesize of output 9 [2022-12-14 14:27:51,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:51,688 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 20 treesize of output 9 [2022-12-14 14:27:51,690 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:27:53,051 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '229#(and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_append_~head#1.base|) |ULTIMATE.start_sll_append_~head#1.offset|) |ULTIMATE.start_sll_append_~new_last~0#1.offset|) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~count~0#1| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_append_~head#1.base|) |ULTIMATE.start_sll_append_~head#1.offset|) |ULTIMATE.start_sll_append_~new_last~0#1.base|) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:27:53,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:27:53,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 14:27:53,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2022-12-14 14:27:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331590436] [2022-12-14 14:27:53,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 14:27:53,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:27:53,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:27:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:27:53,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-12-14 14:27:53,054 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 14:27:53,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:27:53,082 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2022-12-14 14:27:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 14:27:53,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 18 [2022-12-14 14:27:53,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:27:53,083 INFO L225 Difference]: With dead ends: 38 [2022-12-14 14:27:53,083 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 14:27:53,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-12-14 14:27:53,084 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:27:53,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 70 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:27:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 14:27:53,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 14:27:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2022-12-14 14:27:53,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-12-14 14:27:53,090 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 18 [2022-12-14 14:27:53,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:27:53,090 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-12-14 14:27:53,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-14 14:27:53,091 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-12-14 14:27:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 14:27:53,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:27:53,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:27:53,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 14:27:53,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-14 14:27:53,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:27:53,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:27:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1095883802, now seen corresponding path program 2 times [2022-12-14 14:27:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:27:53,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11362794] [2022-12-14 14:27:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:53,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:27:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:53,642 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:27:53,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:27:53,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11362794] [2022-12-14 14:27:53,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11362794] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:27:53,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747069872] [2022-12-14 14:27:53,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:27:53,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:53,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:27:53,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:27:53,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 14:27:53,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 14:27:53,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:27:53,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-14 14:27:53,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:27:53,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:27:53,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:27:53,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:53,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:53,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:27:53,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:53,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:54,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:54,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 14:27:54,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 14:27:54,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747069872] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:27:54,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 14:27:54,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 22 [2022-12-14 14:27:54,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747320182] [2022-12-14 14:27:54,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:27:54,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 14:27:54,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:27:54,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 14:27:54,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-12-14 14:27:54,047 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:27:54,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:27:54,324 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-12-14 14:27:54,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 14:27:54,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-12-14 14:27:54,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:27:54,326 INFO L225 Difference]: With dead ends: 36 [2022-12-14 14:27:54,326 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 14:27:54,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=659, Unknown=0, NotChecked=0, Total=756 [2022-12-14 14:27:54,327 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:27:54,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 57 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:27:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 14:27:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2022-12-14 14:27:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2022-12-14 14:27:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-12-14 14:27:54,331 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 24 [2022-12-14 14:27:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:27:54,331 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-12-14 14:27:54,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:27:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-12-14 14:27:54,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 14:27:54,332 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:27:54,332 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:27:54,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 14:27:54,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:54,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:27:54,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:27:54,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1095827816, now seen corresponding path program 1 times [2022-12-14 14:27:54,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:27:54,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120765041] [2022-12-14 14:27:54,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:54,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:27:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 14:27:54,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:27:54,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120765041] [2022-12-14 14:27:54,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120765041] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:27:54,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:27:54,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 14:27:54,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484876539] [2022-12-14 14:27:54,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:27:54,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 14:27:54,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:27:54,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 14:27:54,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-14 14:27:54,804 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:27:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:27:54,881 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-12-14 14:27:54,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 14:27:54,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-12-14 14:27:54,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:27:54,882 INFO L225 Difference]: With dead ends: 34 [2022-12-14 14:27:54,882 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 14:27:54,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:27:54,883 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:27:54,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 75 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:27:54,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 14:27:54,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2022-12-14 14:27:54,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-12-14 14:27:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-12-14 14:27:54,889 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 24 [2022-12-14 14:27:54,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:27:54,889 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-12-14 14:27:54,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 14:27:54,889 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-12-14 14:27:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-14 14:27:54,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:27:54,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:27:54,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:27:54,890 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:27:54,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:27:54,890 INFO L85 PathProgramCache]: Analyzing trace with hash -877311743, now seen corresponding path program 1 times [2022-12-14 14:27:54,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:27:54,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645205630] [2022-12-14 14:27:54,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:54,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:27:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:55,120 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 14:27:55,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:27:55,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645205630] [2022-12-14 14:27:55,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645205630] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:27:55,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458473036] [2022-12-14 14:27:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:55,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:55,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:27:55,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:27:55,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 14:27:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:55,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 32 conjunts are in the unsatisfiable core [2022-12-14 14:27:55,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:27:55,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-12-14 14:27:55,335 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (exists ((v_ArrVal_384 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_384))))) is different from true [2022-12-14 14:27:55,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 17 [2022-12-14 14:27:55,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 1 not checked. [2022-12-14 14:27:55,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:27:55,415 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_node_create_~temp~0#1.base_17| Int) (v_ArrVal_387 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_node_create_~temp~0#1.base_17| v_ArrVal_387) |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|) 0)) (not (< |v_node_create_~temp~0#1.base_17| |c_#StackHeapBarrier|)))) is different from false [2022-12-14 14:27:55,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458473036] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:27:55,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [635859724] [2022-12-14 14:27:55,419 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 14:27:55,419 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:27:55,419 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:27:55,419 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:27:55,419 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:27:55,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,441 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:27:55,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 26 [2022-12-14 14:27:55,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,462 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:27:55,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:27:55,490 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 [2022-12-14 14:27:55,494 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 [2022-12-14 14:27:55,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,504 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 16 treesize of output 17 [2022-12-14 14:27:55,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,510 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 20 treesize of output 9 [2022-12-14 14:27:55,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,515 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 20 treesize of output 9 [2022-12-14 14:27:55,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:27:55,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,549 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 [2022-12-14 14:27:55,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:27:55,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,595 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 [2022-12-14 14:27:55,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:27:55,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:27:55,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 14:27:55,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:55,682 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 [2022-12-14 14:27:55,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:55,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:55,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 14:27:55,738 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 [2022-12-14 14:27:55,744 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 [2022-12-14 14:27:55,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:55,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 14:27:55,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:55,821 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:55,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:55,823 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 226 treesize of output 206 [2022-12-14 14:27:55,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:55,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 206 [2022-12-14 14:27:55,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:55,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 208 [2022-12-14 14:27:55,912 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 [2022-12-14 14:27:55,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:55,928 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 [2022-12-14 14:27:55,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:55,943 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 [2022-12-14 14:27:55,971 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 [2022-12-14 14:27:55,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:55,989 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 [2022-12-14 14:27:55,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:56,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:56,078 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:56,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:56,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 206 [2022-12-14 14:27:56,092 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:56,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 206 [2022-12-14 14:27:56,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:27:56,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 208 [2022-12-14 14:27:56,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:56,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:56,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:27:56,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:27:56,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-12-14 14:27:56,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 14:27:56,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-14 14:27:56,632 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-12-14 14:27:56,637 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 [2022-12-14 14:27:56,640 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 [2022-12-14 14:27:56,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:56,649 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 20 treesize of output 9 [2022-12-14 14:27:56,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:56,658 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 16 treesize of output 17 [2022-12-14 14:27:56,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:27:56,664 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 20 treesize of output 9 [2022-12-14 14:27:56,666 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:27:58,452 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '743#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#NULL.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:27:58,452 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:27:58,452 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:27:58,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 20 [2022-12-14 14:27:58,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260482067] [2022-12-14 14:27:58,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:27:58,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 14:27:58,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:27:58,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 14:27:58,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=958, Unknown=2, NotChecked=126, Total=1190 [2022-12-14 14:27:58,454 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 20 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 14:27:58,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:27:58,685 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-12-14 14:27:58,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 14:27:58,685 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 26 [2022-12-14 14:27:58,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:27:58,686 INFO L225 Difference]: With dead ends: 31 [2022-12-14 14:27:58,686 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 14:27:58,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=148, Invalid=1264, Unknown=2, NotChecked=146, Total=1560 [2022-12-14 14:27:58,687 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:27:58,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 96 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 165 Invalid, 0 Unknown, 24 Unchecked, 0.1s Time] [2022-12-14 14:27:58,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 14:27:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 14:27:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 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) [2022-12-14 14:27:58,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-12-14 14:27:58,692 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 26 [2022-12-14 14:27:58,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:27:58,692 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-12-14 14:27:58,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 14:27:58,693 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-12-14 14:27:58,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 14:27:58,693 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:27:58,693 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:27:58,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 14:27:58,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:58,895 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:27:58,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:27:58,896 INFO L85 PathProgramCache]: Analyzing trace with hash 384410914, now seen corresponding path program 1 times [2022-12-14 14:27:58,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:27:58,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437157070] [2022-12-14 14:27:58,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:58,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:27:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:27:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:27:59,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:27:59,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437157070] [2022-12-14 14:27:59,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437157070] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:27:59,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802508269] [2022-12-14 14:27:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:27:59,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:27:59,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:27:59,806 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:27:59,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 14:28:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:00,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 14:28:00,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:28:00,069 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 [2022-12-14 14:28:00,098 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 11 treesize of output 7 [2022-12-14 14:28:00,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:00,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:28:00,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2022-12-14 14:28:00,284 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 [2022-12-14 14:28:00,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:00,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:00,325 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (exists ((v_ArrVal_506 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_506))) (exists ((v_ArrVal_508 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_508))) (exists ((v_ArrVal_505 (Array Int Int))) (= (store |c_old(#memory_int)| |node_create_~temp~0#1.base| v_ArrVal_505) |c_#memory_int|)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-12-14 14:28:00,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:00,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 40 [2022-12-14 14:28:00,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:00,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:00,368 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-14 14:28:00,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-14 14:28:00,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:00,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:00,632 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 14:28:00,633 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 94 treesize of output 79 [2022-12-14 14:28:00,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:00,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2022-12-14 14:28:00,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:00,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2022-12-14 14:28:00,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:00,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 20 [2022-12-14 14:28:00,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:28:00,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:28:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2022-12-14 14:28:00,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:28:01,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802508269] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:01,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1005113341] [2022-12-14 14:28:01,295 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 14:28:01,295 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:28:01,295 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:28:01,295 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:28:01,295 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:28:01,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:01,321 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:28:01,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:28:01,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:01,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 14:28:01,349 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 [2022-12-14 14:28:01,352 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 [2022-12-14 14:28:01,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:01,360 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 20 treesize of output 9 [2022-12-14 14:28:01,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:01,367 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 16 treesize of output 17 [2022-12-14 14:28:01,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:01,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 14:28:01,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:01,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:28:01,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:01,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 14:28:01,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:01,428 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 [2022-12-14 14:28:01,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:01,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:28:01,481 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:01,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:01,483 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 207 treesize of output 187 [2022-12-14 14:28:01,492 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:01,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 187 [2022-12-14 14:28:01,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:01,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 98 [2022-12-14 14:28:01,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:01,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:01,556 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 [2022-12-14 14:28:01,563 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 [2022-12-14 14:28:01,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:01,601 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 [2022-12-14 14:28:01,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:01,615 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 [2022-12-14 14:28:01,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:01,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:01,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:01,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:01,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:28:01,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 58 [2022-12-14 14:28:01,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2022-12-14 14:28:01,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2022-12-14 14:28:01,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 52 [2022-12-14 14:28:01,875 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 13 treesize of output 9 [2022-12-14 14:28:01,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:01,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:02,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:02,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:02,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:02,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:02,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:28:02,152 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-12-14 14:28:02,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 36 [2022-12-14 14:28:02,168 INFO L321 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2022-12-14 14:28:02,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 32 [2022-12-14 14:28:02,230 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-12-14 14:28:02,236 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 [2022-12-14 14:28:02,241 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 [2022-12-14 14:28:02,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:02,251 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 20 treesize of output 9 [2022-12-14 14:28:02,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:02,261 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 16 treesize of output 17 [2022-12-14 14:28:02,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:02,266 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 20 treesize of output 9 [2022-12-14 14:28:02,267 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:28:04,137 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '989#(and (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_append_~head#1.base|) |ULTIMATE.start_sll_append_~head#1.offset|) |ULTIMATE.start_sll_append_~last~0#1.offset|) (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_append_~head#1.base|) |ULTIMATE.start_sll_append_~head#1.offset|) |ULTIMATE.start_sll_append_~last~0#1.base|) (or (not (= |ULTIMATE.start_sll_append_~last~0#1.offset| 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_append_~head#1.base|) |ULTIMATE.start_sll_append_~head#1.offset|) 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~count~0#1| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_append_~last~0#1.base|) (+ |ULTIMATE.start_sll_append_~last~0#1.offset| 4)) |ULTIMATE.start_sll_append_~new_last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_append_~last~0#1.base|) (+ |ULTIMATE.start_sll_append_~last~0#1.offset| 4))) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:28:04,137 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:28:04,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:28:04,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 31 [2022-12-14 14:28:04,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520275548] [2022-12-14 14:28:04,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:28:04,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 14:28:04,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:04,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 14:28:04,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2551, Unknown=14, NotChecked=102, Total=2862 [2022-12-14 14:28:04,139 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 31 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 14:28:05,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:28:05,030 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2022-12-14 14:28:05,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 14:28:05,031 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 27 [2022-12-14 14:28:05,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:28:05,031 INFO L225 Difference]: With dead ends: 37 [2022-12-14 14:28:05,031 INFO L226 Difference]: Without dead ends: 34 [2022-12-14 14:28:05,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=354, Invalid=3796, Unknown=14, NotChecked=126, Total=4290 [2022-12-14 14:28:05,032 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 84 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:28:05,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 104 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 480 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-12-14 14:28:05,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-14 14:28:05,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2022-12-14 14:28:05,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 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) [2022-12-14 14:28:05,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-12-14 14:28:05,037 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 27 [2022-12-14 14:28:05,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:28:05,037 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-12-14 14:28:05,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 1.44) internal successors, (36), 27 states have internal predecessors, (36), 4 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-14 14:28:05,037 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-12-14 14:28:05,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 14:28:05,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:28:05,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:28:05,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 14:28:05,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:28:05,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:28:05,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:28:05,241 INFO L85 PathProgramCache]: Analyzing trace with hash 51735357, now seen corresponding path program 1 times [2022-12-14 14:28:05,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:28:05,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763407220] [2022-12-14 14:28:05,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:05,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:28:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:05,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:28:05,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:28:05,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763407220] [2022-12-14 14:28:05,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763407220] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:05,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345101290] [2022-12-14 14:28:05,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:05,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:28:05,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:28:05,878 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:28:05,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 14:28:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:06,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 145 conjunts are in the unsatisfiable core [2022-12-14 14:28:06,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:28:06,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:28:06,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:06,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:28:06,224 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 14:28:06,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 14:28:06,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:06,279 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 [2022-12-14 14:28:06,334 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 [2022-12-14 14:28:06,337 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:28:06,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:28:06,461 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:28:06,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 14:28:06,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:06,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:06,496 INFO L321 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-12-14 14:28:06,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2022-12-14 14:28:06,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:06,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 14:28:06,609 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 13 treesize of output 9 [2022-12-14 14:28:06,801 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:06,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 43 [2022-12-14 14:28:06,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:06,811 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:28:06,812 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 1 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 14:28:06,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:06,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:28:06,886 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_652 (Array Int Int))) (= (store |c_old(#memory_int)| |node_create_~temp~0#1.base| v_ArrVal_652) |c_#memory_int|)) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_651 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_651) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_650 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_650) |c_#memory_$Pointer$.base|)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2022-12-14 14:28:06,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:06,913 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 14:28:06,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 80 [2022-12-14 14:28:06,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:06,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-14 14:28:06,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:06,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:06,948 INFO L321 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2022-12-14 14:28:06,948 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 3 case distinctions, treesize of input 33 treesize of output 33 [2022-12-14 14:28:06,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:06,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:06,954 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-12-14 14:28:07,250 INFO L321 Elim1Store]: treesize reduction 62, result has 23.5 percent of original size [2022-12-14 14:28:07,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 137 treesize of output 84 [2022-12-14 14:28:07,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:07,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:07,264 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 40 treesize of output 38 [2022-12-14 14:28:07,272 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 26 treesize of output 28 [2022-12-14 14:28:07,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:07,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:07,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:07,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 54 [2022-12-14 14:28:07,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:07,393 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 14:28:07,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-12-14 14:28:07,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:28:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 14:28:07,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:28:07,596 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_654 Int) (v_ArrVal_658 (Array Int Int)) (v_ArrVal_657 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse4 (+ |c_ULTIMATE.start_sll_append_~last~0#1.offset| 4))) (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_append_~last~0#1.base|) .cse4 v_ArrVal_657))) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_append_~last~0#1.base|) .cse4 v_ArrVal_654)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse2 (+ (select (select .cse3 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_append_~last~0#1.base| v_ArrVal_658) (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2))))))) is different from false [2022-12-14 14:28:08,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345101290] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:08,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2076204952] [2022-12-14 14:28:08,296 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 14:28:08,296 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:28:08,297 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:28:08,297 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:28:08,297 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:28:08,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:08,314 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:28:08,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 26 [2022-12-14 14:28:08,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:08,331 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:28:08,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:28:08,349 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 [2022-12-14 14:28:08,352 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 [2022-12-14 14:28:08,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:08,360 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 16 treesize of output 17 [2022-12-14 14:28:08,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:08,364 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 20 treesize of output 9 [2022-12-14 14:28:08,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:08,368 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 20 treesize of output 9 [2022-12-14 14:28:08,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:08,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:28:08,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:08,391 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 [2022-12-14 14:28:08,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:08,413 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 [2022-12-14 14:28:08,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:08,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:28:08,440 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:08,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:28:08,447 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:08,447 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 21 treesize of output 13 [2022-12-14 14:28:08,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:08,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 14:28:08,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:08,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:08,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:08,502 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 [2022-12-14 14:28:08,509 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 [2022-12-14 14:28:08,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:08,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 14:28:08,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:08,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:08,560 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 [2022-12-14 14:28:08,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:28:08,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:08,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:08,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 58 [2022-12-14 14:28:08,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2022-12-14 14:28:08,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2022-12-14 14:28:08,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 52 [2022-12-14 14:28:08,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:28:08,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:08,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:08,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:08,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:08,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:08,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:09,063 INFO L321 Elim1Store]: treesize reduction 25, result has 40.5 percent of original size [2022-12-14 14:28:09,064 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 192 treesize of output 182 [2022-12-14 14:28:09,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:09,103 INFO L321 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2022-12-14 14:28:09,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 211 treesize of output 199 [2022-12-14 14:28:09,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:09,149 INFO L321 Elim1Store]: treesize reduction 70, result has 24.7 percent of original size [2022-12-14 14:28:09,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 211 treesize of output 207 [2022-12-14 14:28:09,435 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-12-14 14:28:09,443 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 [2022-12-14 14:28:09,447 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 [2022-12-14 14:28:09,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:09,460 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 20 treesize of output 9 [2022-12-14 14:28:09,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:09,467 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 16 treesize of output 17 [2022-12-14 14:28:09,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:09,475 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 20 treesize of output 9 [2022-12-14 14:28:09,476 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:28:14,348 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1295#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:28:14,348 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:28:14,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:28:14,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25] total 43 [2022-12-14 14:28:14,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812604028] [2022-12-14 14:28:14,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:28:14,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 14:28:14,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:14,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 14:28:14,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=4202, Unknown=2, NotChecked=262, Total=4692 [2022-12-14 14:28:14,350 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 43 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 33 states have internal predecessors, (44), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 14:28:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:28:15,717 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2022-12-14 14:28:15,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 14:28:15,717 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 33 states have internal predecessors, (44), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2022-12-14 14:28:15,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:28:15,718 INFO L225 Difference]: With dead ends: 36 [2022-12-14 14:28:15,718 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 14:28:15,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1682 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=393, Invalid=5775, Unknown=2, NotChecked=310, Total=6480 [2022-12-14 14:28:15,722 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 75 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:28:15,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 169 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 593 Invalid, 0 Unknown, 31 Unchecked, 0.4s Time] [2022-12-14 14:28:15,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 14:28:15,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-12-14 14:28:15,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2022-12-14 14:28:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-12-14 14:28:15,728 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 29 [2022-12-14 14:28:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:28:15,728 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-12-14 14:28:15,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 33 states have internal predecessors, (44), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 14:28:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-12-14 14:28:15,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 14:28:15,729 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:28:15,729 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:28:15,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 14:28:15,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 14:28:15,930 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:28:15,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:28:15,930 INFO L85 PathProgramCache]: Analyzing trace with hash -394818819, now seen corresponding path program 1 times [2022-12-14 14:28:15,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:28:15,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495125402] [2022-12-14 14:28:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:15,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:28:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:28:17,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:28:17,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495125402] [2022-12-14 14:28:17,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495125402] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:17,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120395962] [2022-12-14 14:28:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:17,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:28:17,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:28:17,154 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:28:17,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 14:28:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:17,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 124 conjunts are in the unsatisfiable core [2022-12-14 14:28:17,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:28:17,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:28:17,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:17,406 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 14:28:17,406 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 [2022-12-14 14:28:17,472 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:28:17,472 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 [2022-12-14 14:28:17,507 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 11 treesize of output 7 [2022-12-14 14:28:17,552 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-12-14 14:28:17,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-12-14 14:28:17,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:17,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:17,624 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 21 treesize of output 20 [2022-12-14 14:28:17,754 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:17,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2022-12-14 14:28:17,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:17,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:17,768 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:28:17,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 14:28:17,805 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_792 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_792) |c_#memory_$Pointer$.offset|)) (<= (+ |node_create_~temp~0#1.base| 1) |c_#StackHeapBarrier|) (exists ((v_ArrVal_791 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_791))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_793 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |node_create_~temp~0#1.base| v_ArrVal_793))))) is different from true [2022-12-14 14:28:17,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:17,838 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 14:28:17,838 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 72 treesize of output 64 [2022-12-14 14:28:17,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:17,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 14:28:17,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:17,869 INFO L321 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2022-12-14 14:28:17,869 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 3 case distinctions, treesize of input 33 treesize of output 33 [2022-12-14 14:28:17,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:17,872 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 [2022-12-14 14:28:18,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:18,222 INFO L321 Elim1Store]: treesize reduction 128, result has 21.5 percent of original size [2022-12-14 14:28:18,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 169 treesize of output 91 [2022-12-14 14:28:18,237 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 14:28:18,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 88 [2022-12-14 14:28:18,246 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 26 treesize of output 28 [2022-12-14 14:28:18,300 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:18,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 26 [2022-12-14 14:28:18,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:28:18,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:28:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-12-14 14:28:18,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:28:18,377 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_797 Int) (v_ArrVal_794 (Array Int Int)) (v_ArrVal_798 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (+ |c_ULTIMATE.start_sll_append_~last~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_append_~last~0#1.base| v_ArrVal_794) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_append_~last~0#1.base|) .cse0 v_ArrVal_798)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_append_~last~0#1.base|) .cse0 v_ArrVal_797)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-12-14 14:28:19,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120395962] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:19,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [414546656] [2022-12-14 14:28:19,185 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 14:28:19,185 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:28:19,186 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:28:19,186 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:28:19,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:28:19,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:19,204 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:28:19,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 26 [2022-12-14 14:28:19,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:19,221 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:28:19,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:28:19,240 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 [2022-12-14 14:28:19,243 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 [2022-12-14 14:28:19,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:19,248 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 20 treesize of output 9 [2022-12-14 14:28:19,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:19,253 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 16 treesize of output 17 [2022-12-14 14:28:19,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:19,257 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 20 treesize of output 9 [2022-12-14 14:28:19,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:19,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:28:19,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:19,278 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 [2022-12-14 14:28:19,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:19,305 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 14:28:19,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:19,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:28:19,362 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:19,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:19,363 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 207 treesize of output 187 [2022-12-14 14:28:19,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:19,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 187 [2022-12-14 14:28:19,385 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:19,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 98 [2022-12-14 14:28:19,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 14:28:19,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:19,432 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 [2022-12-14 14:28:19,438 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 [2022-12-14 14:28:19,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:19,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:19,472 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 [2022-12-14 14:28:19,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:19,484 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 [2022-12-14 14:28:19,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:19,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:19,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:19,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:19,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2022-12-14 14:28:19,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 52 [2022-12-14 14:28:19,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 58 [2022-12-14 14:28:19,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 45 [2022-12-14 14:28:19,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:19,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:19,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:19,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:19,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:19,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:19,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:20,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:20,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:28:20,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:28:20,085 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-12-14 14:28:20,091 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 [2022-12-14 14:28:20,095 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 [2022-12-14 14:28:20,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:20,104 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 20 treesize of output 9 [2022-12-14 14:28:20,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:20,112 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 16 treesize of output 17 [2022-12-14 14:28:20,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:20,116 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 20 treesize of output 9 [2022-12-14 14:28:20,117 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:28:22,877 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1591#(and (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~count~0#1| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_append_~last~0#1.base|) (+ |ULTIMATE.start_sll_append_~last~0#1.offset| 4)) |ULTIMATE.start_sll_append_~new_last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_append_~last~0#1.base|) (+ |ULTIMATE.start_sll_append_~last~0#1.offset| 4))) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:28:22,877 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:28:22,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:28:22,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 43 [2022-12-14 14:28:22,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230135788] [2022-12-14 14:28:22,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:28:22,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 14:28:22,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:22,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 14:28:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=3706, Unknown=2, NotChecked=246, Total=4160 [2022-12-14 14:28:22,879 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 43 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 14:28:25,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:28:25,133 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-12-14 14:28:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 14:28:25,133 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 29 [2022-12-14 14:28:25,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:28:25,134 INFO L225 Difference]: With dead ends: 41 [2022-12-14 14:28:25,134 INFO L226 Difference]: Without dead ends: 38 [2022-12-14 14:28:25,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=545, Invalid=6103, Unknown=2, NotChecked=322, Total=6972 [2022-12-14 14:28:25,135 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 191 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:28:25,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 130 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 599 Invalid, 0 Unknown, 34 Unchecked, 0.4s Time] [2022-12-14 14:28:25,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-14 14:28:25,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2022-12-14 14:28:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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) [2022-12-14 14:28:25,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2022-12-14 14:28:25,141 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 29 [2022-12-14 14:28:25,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:28:25,141 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2022-12-14 14:28:25,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 35 states have internal predecessors, (44), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 14:28:25,141 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2022-12-14 14:28:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 14:28:25,142 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:28:25,142 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:28:25,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 14:28:25,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 14:28:25,344 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:28:25,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:28:25,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1463728552, now seen corresponding path program 1 times [2022-12-14 14:28:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:28:25,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688512442] [2022-12-14 14:28:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:25,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:28:25,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:28:27,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:28:27,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688512442] [2022-12-14 14:28:27,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688512442] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:27,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292212540] [2022-12-14 14:28:27,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:28:27,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:28:27,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:28:27,073 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:28:27,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 14:28:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:28:27,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 153 conjunts are in the unsatisfiable core [2022-12-14 14:28:27,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:28:27,265 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 [2022-12-14 14:28:27,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:28:27,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:27,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:28:27,490 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 [2022-12-14 14:28:27,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:27,624 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:28:27,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 14:28:27,633 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 [2022-12-14 14:28:27,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:27,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:27,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 14:28:27,921 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:27,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 46 [2022-12-14 14:28:27,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:27,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:28:27,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:28:27,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:27,984 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_937 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_937) |c_#memory_$Pointer$.base|)) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_935 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_935) |c_#memory_$Pointer$.offset|)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_934 (Array Int Int))) (= (store |c_old(#memory_int)| |node_create_~temp~0#1.base| v_ArrVal_934) |c_#memory_int|)))) is different from true [2022-12-14 14:28:28,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:28,018 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 14:28:28,018 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 113 treesize of output 87 [2022-12-14 14:28:28,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:28,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-14 14:28:28,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:28,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:28,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:28,042 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 [2022-12-14 14:28:28,054 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-12-14 14:28:28,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 14:28:28,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:28,682 INFO L321 Elim1Store]: treesize reduction 145, result has 11.0 percent of original size [2022-12-14 14:28:28,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 248 treesize of output 111 [2022-12-14 14:28:28,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:28,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:28,694 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:28:28,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 61 [2022-12-14 14:28:28,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:28,701 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 45 treesize of output 36 [2022-12-14 14:28:28,873 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:28,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:28,876 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:28,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 59 [2022-12-14 14:28:28,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:28,883 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-12-14 14:28:28,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 18 [2022-12-14 14:28:28,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:28:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 14:28:28,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:28:51,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292212540] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:28:51,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [769301704] [2022-12-14 14:28:51,406 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 14:28:51,407 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:28:51,407 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:28:51,407 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:28:51,407 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:28:51,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:51,432 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:28:51,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:28:51,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:51,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 14:28:51,461 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 [2022-12-14 14:28:51,464 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 [2022-12-14 14:28:51,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:51,470 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 20 treesize of output 9 [2022-12-14 14:28:51,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:51,475 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 20 treesize of output 9 [2022-12-14 14:28:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:51,482 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 16 treesize of output 17 [2022-12-14 14:28:51,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:51,496 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 [2022-12-14 14:28:51,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:51,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:28:51,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:51,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:28:51,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:51,546 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 [2022-12-14 14:28:51,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:51,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 14:28:51,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:51,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:28:51,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:28:51,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:28:51,622 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 [2022-12-14 14:28:51,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:51,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 14:28:51,645 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 [2022-12-14 14:28:51,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:51,678 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 [2022-12-14 14:28:51,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:28:51,693 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 [2022-12-14 14:28:51,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:51,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:51,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:51,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:51,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:28:51,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 7 [2022-12-14 14:28:51,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 14:28:51,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:51,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:28:51,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:28:52,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:52,071 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 141 treesize of output 152 [2022-12-14 14:28:52,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 127 [2022-12-14 14:28:52,109 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:52,110 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 127 treesize of output 144 [2022-12-14 14:28:52,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:52,127 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:52,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 111 [2022-12-14 14:28:52,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:52,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:28:52,466 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:52,466 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 141 treesize of output 152 [2022-12-14 14:28:52,495 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:52,496 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 135 treesize of output 152 [2022-12-14 14:28:52,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 119 [2022-12-14 14:28:52,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:52,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:28:52,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 111 [2022-12-14 14:28:52,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:28:52,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:28:52,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:28:52,911 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-12-14 14:28:52,917 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 [2022-12-14 14:28:52,920 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 [2022-12-14 14:28:52,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:52,931 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 20 treesize of output 9 [2022-12-14 14:28:52,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:52,937 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 20 treesize of output 9 [2022-12-14 14:28:52,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:28:52,945 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 16 treesize of output 17 [2022-12-14 14:28:52,949 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:28:56,223 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1936#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~new_head~0#1.offset|) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_sll_create_~new_head~0#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#NULL.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:28:56,223 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:28:56,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:28:56,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 47 [2022-12-14 14:28:56,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033064119] [2022-12-14 14:28:56,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:28:56,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-14 14:28:56,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:28:56,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-14 14:28:56,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=4866, Unknown=6, NotChecked=140, Total=5256 [2022-12-14 14:28:56,225 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 47 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 14:29:00,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:00,155 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2022-12-14 14:29:00,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 14:29:00,156 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 31 [2022-12-14 14:29:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:00,156 INFO L225 Difference]: With dead ends: 43 [2022-12-14 14:29:00,156 INFO L226 Difference]: Without dead ends: 40 [2022-12-14 14:29:00,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1673 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=605, Invalid=7403, Unknown=6, NotChecked=176, Total=8190 [2022-12-14 14:29:00,158 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 231 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:00,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 230 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 979 Invalid, 0 Unknown, 40 Unchecked, 0.8s Time] [2022-12-14 14:29:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-14 14:29:00,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-12-14 14:29:00,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 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) [2022-12-14 14:29:00,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-12-14 14:29:00,168 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 31 [2022-12-14 14:29:00,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:00,168 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-12-14 14:29:00,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 14:29:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-12-14 14:29:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 14:29:00,169 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:00,169 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:29:00,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 14:29:00,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:29:00,371 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:29:00,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:00,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1910282728, now seen corresponding path program 2 times [2022-12-14 14:29:00,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:29:00,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965692202] [2022-12-14 14:29:00,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:00,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:29:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:29:02,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:29:02,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965692202] [2022-12-14 14:29:02,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965692202] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:29:02,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687842885] [2022-12-14 14:29:02,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:29:02,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:29:02,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:29:02,219 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:29:02,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 14:29:02,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 14:29:02,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:29:02,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 146 conjunts are in the unsatisfiable core [2022-12-14 14:29:02,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:02,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:29:02,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:02,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:29:02,663 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:29:02,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-14 14:29:02,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:02,691 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:29:02,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 14:29:02,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:02,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:29:02,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:29:02,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:29:02,977 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 14:29:02,978 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 42 [2022-12-14 14:29:02,985 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:02,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:29:03,045 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1079 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1079) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_1081 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1081))) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_1082 (Array Int Int))) (= (store |c_old(#memory_int)| |node_create_~temp~0#1.base| v_ArrVal_1082) |c_#memory_int|)))) is different from true [2022-12-14 14:29:03,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:03,076 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-12-14 14:29:03,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 74 treesize of output 74 [2022-12-14 14:29:03,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:03,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:03,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:03,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:03,095 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-14 14:29:03,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-12-14 14:29:03,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:03,108 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-12-14 14:29:03,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 14:29:03,575 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:03,634 INFO L321 Elim1Store]: treesize reduction 278, result has 14.5 percent of original size [2022-12-14 14:29:03,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 20 case distinctions, treesize of input 291 treesize of output 126 [2022-12-14 14:29:03,650 INFO L321 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2022-12-14 14:29:03,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 34 [2022-12-14 14:29:03,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 14:29:03,730 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 14:29:03,730 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 39 [2022-12-14 14:29:03,736 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:03,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 14:29:03,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:29:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-12-14 14:29:03,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:29:03,832 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1084 Int) (v_ArrVal_1083 Int) (v_ArrVal_1087 (Array Int Int))) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (+ |c_ULTIMATE.start_sll_append_~last~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_append_~last~0#1.base| v_ArrVal_1087) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_append_~last~0#1.base|) .cse0 v_ArrVal_1083)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_append_~last~0#1.base|) .cse0 v_ArrVal_1084)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-12-14 14:29:05,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687842885] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:29:05,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1749796864] [2022-12-14 14:29:05,039 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 14:29:05,039 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:29:05,039 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:29:05,039 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:29:05,039 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:29:05,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,058 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:29:05,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:29:05,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 14:29:05,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:29:05,084 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 [2022-12-14 14:29:05,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,089 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 20 treesize of output 9 [2022-12-14 14:29:05,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,096 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 16 treesize of output 17 [2022-12-14 14:29:05,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,100 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 20 treesize of output 9 [2022-12-14 14:29:05,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,113 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 [2022-12-14 14:29:05,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:29:05,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,143 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 [2022-12-14 14:29:05,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:29:05,170 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:05,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:29:05,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 14:29:05,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:05,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:29:05,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:29:05,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:05,221 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 [2022-12-14 14:29:05,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:05,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 14:29:05,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:05,264 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 [2022-12-14 14:29:05,272 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 [2022-12-14 14:29:05,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:05,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 14:29:05,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:29:05,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:29:05,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:05,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 7 [2022-12-14 14:29:05,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 14:29:05,380 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 19 treesize of output 1 [2022-12-14 14:29:05,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:05,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:05,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:29:05,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:05,614 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 141 treesize of output 158 [2022-12-14 14:29:05,632 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:05,633 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 133 treesize of output 144 [2022-12-14 14:29:05,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 119 [2022-12-14 14:29:05,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,654 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:05,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 111 [2022-12-14 14:29:05,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 133 [2022-12-14 14:29:05,949 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:05,949 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 133 treesize of output 150 [2022-12-14 14:29:05,968 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:05,969 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 125 treesize of output 136 [2022-12-14 14:29:05,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:05,984 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:05,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 111 [2022-12-14 14:29:06,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:29:06,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:29:06,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:29:06,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:29:06,509 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-12-14 14:29:06,515 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 [2022-12-14 14:29:06,518 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 [2022-12-14 14:29:06,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:06,528 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 20 treesize of output 9 [2022-12-14 14:29:06,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:06,534 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 16 treesize of output 17 [2022-12-14 14:29:06,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:06,541 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 20 treesize of output 9 [2022-12-14 14:29:06,542 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:29:09,961 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2281#(and (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~new_head~0#1.offset|) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_create_~new_head~0#1.offset| 0) (= |ULTIMATE.start_main_~count~0#1| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_append_~last~0#1.base|) (+ |ULTIMATE.start_sll_append_~last~0#1.offset| 4)) |ULTIMATE.start_sll_append_~new_last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_append_~last~0#1.base|) (+ |ULTIMATE.start_sll_append_~last~0#1.offset| 4))) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:29:09,961 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:29:09,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:29:09,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 46 [2022-12-14 14:29:09,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117015176] [2022-12-14 14:29:09,961 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:29:09,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-14 14:29:09,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:29:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-14 14:29:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=4205, Unknown=2, NotChecked=262, Total=4692 [2022-12-14 14:29:09,963 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 46 states, 39 states have (on average 1.205128205128205) internal successors, (47), 38 states have internal predecessors, (47), 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) [2022-12-14 14:29:13,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:13,311 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2022-12-14 14:29:13,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 14:29:13,312 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 39 states have (on average 1.205128205128205) internal successors, (47), 38 states have internal predecessors, (47), 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 31 [2022-12-14 14:29:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:13,312 INFO L225 Difference]: With dead ends: 73 [2022-12-14 14:29:13,312 INFO L226 Difference]: Without dead ends: 70 [2022-12-14 14:29:13,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1588 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=465, Invalid=6681, Unknown=2, NotChecked=334, Total=7482 [2022-12-14 14:29:13,314 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 112 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:13,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 234 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1035 Invalid, 0 Unknown, 59 Unchecked, 0.9s Time] [2022-12-14 14:29:13,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-12-14 14:29:13,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 47. [2022-12-14 14:29:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 14:29:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2022-12-14 14:29:13,325 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 31 [2022-12-14 14:29:13,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:13,325 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2022-12-14 14:29:13,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 39 states have (on average 1.205128205128205) internal successors, (47), 38 states have internal predecessors, (47), 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) [2022-12-14 14:29:13,326 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2022-12-14 14:29:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 14:29:13,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:13,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:29:13,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 14:29:13,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 14:29:13,528 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:29:13,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:13,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2106169075, now seen corresponding path program 2 times [2022-12-14 14:29:13,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:29:13,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107986946] [2022-12-14 14:29:13,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:13,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:29:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:29:15,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:29:15,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107986946] [2022-12-14 14:29:15,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107986946] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:29:15,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050716476] [2022-12-14 14:29:15,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 14:29:15,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:29:15,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:29:15,132 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:29:15,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 14:29:15,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 14:29:15,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:29:15,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 168 conjunts are in the unsatisfiable core [2022-12-14 14:29:15,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:15,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:29:15,704 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:29:15,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 14:29:15,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:29:15,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:15,991 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:15,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 32 [2022-12-14 14:29:15,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 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 [2022-12-14 14:29:16,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:16,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:29:16,040 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 11 treesize of output 7 [2022-12-14 14:29:16,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:16,142 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 14:29:16,142 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 73 treesize of output 65 [2022-12-14 14:29:16,163 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-12-14 14:29:16,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 14:29:16,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:16,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:16,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2022-12-14 14:29:16,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:16,992 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:17,022 INFO L321 Elim1Store]: treesize reduction 139, result has 14.7 percent of original size [2022-12-14 14:29:17,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 216 treesize of output 108 [2022-12-14 14:29:17,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:17,053 INFO L321 Elim1Store]: treesize reduction 104, result has 22.4 percent of original size [2022-12-14 14:29:17,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 268 treesize of output 180 [2022-12-14 14:29:17,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 64 [2022-12-14 14:29:17,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:17,640 INFO L321 Elim1Store]: treesize reduction 27, result has 12.9 percent of original size [2022-12-14 14:29:17,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 349 treesize of output 120 [2022-12-14 14:29:17,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:17,652 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-12-14 14:29:17,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 33 [2022-12-14 14:29:17,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 14:29:17,880 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:29:17,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:29:19,296 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:19,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1880 treesize of output 1872 [2022-12-14 14:29:19,378 INFO L321 Elim1Store]: treesize reduction 4, result has 99.9 percent of original size [2022-12-14 14:29:19,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 4636 treesize of output 6449 [2022-12-14 14:29:19,400 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:19,400 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 2164 treesize of output 2168 [2022-12-14 14:29:22,656 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse68 (= |c_ULTIMATE.start_main_~data~0#1| |c_ULTIMATE.start_sll_append_~data#1|))) (let ((.cse40 (not .cse68))) (and (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse9 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse11 (select (select .cse9 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse12 (+ 4 (select (select .cse10 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse4 (select (select .cse9 .cse11) .cse12))) (let ((.cse0 (select .cse9 .cse4)) (.cse1 (+ (select (select .cse10 .cse11) .cse12) 4))) (let ((.cse6 (store .cse10 .cse4 (store (select .cse10 .cse4) .cse1 0))) (.cse5 (store .cse9 .cse4 (store .cse0 .cse1 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse7 (select (select .cse5 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse8 (+ (select (select .cse6 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse3 (select (select .cse5 .cse7) .cse8))) (let ((.cse2 (select (select .cse5 .cse3) (+ (select (select .cse6 .cse7) .cse8) 4)))) (or (not (= (select .cse0 .cse1) 0)) (= .cse2 .cse3) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse3) (not (= .cse2 .cse4)))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse24 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse23 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse25 (select (select .cse23 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse26 (+ 4 (select (select .cse24 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse20 (select (select .cse23 .cse25) .cse26))) (let ((.cse17 (select .cse23 .cse20)) (.cse18 (+ (select (select .cse24 .cse25) .cse26) 4))) (let ((.cse13 (store .cse24 .cse20 (store (select .cse24 .cse20) .cse18 0))) (.cse19 (store .cse23 .cse20 (store .cse17 .cse18 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse21 (select (select .cse19 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse22 (+ (select (select .cse13 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse16 (select (select .cse13 .cse21) .cse22))) (let ((.cse14 (select (select .cse19 .cse21) .cse22)) (.cse15 (+ .cse16 4))) (or (= (select (select .cse13 .cse14) .cse15) .cse16) (not (= (select .cse17 .cse18) 0)) (= .cse16 0) (not (= (select (select .cse19 .cse14) .cse15) .cse20)))))))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (or (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int) (v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse37 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse35 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse38 (select (select .cse35 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse39 (+ 4 (select (select .cse37 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse36 (select (select .cse35 .cse38) .cse39))) (let ((.cse30 (select .cse35 .cse36)) (.cse31 (+ (select (select .cse37 .cse38) .cse39) 4))) (let ((.cse27 (store .cse37 .cse36 (store (select .cse37 .cse36) .cse31 0))) (.cse32 (store .cse35 .cse36 (store .cse30 .cse31 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse33 (select (select .cse32 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse34 (+ (select (select .cse27 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse29 (+ (select (select .cse27 .cse33) .cse34) 4)) (.cse28 (select (select .cse32 .cse33) .cse34))) (or (= (select (select .cse27 .cse28) .cse29) 0) (not (= (select .cse30 .cse31) 0)) (= (select (select .cse32 .cse28) .cse29) .cse28) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0))))))))))) .cse40) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse52 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse50 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse53 (select (select .cse50 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse54 (+ 4 (select (select .cse52 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse51 (select (select .cse50 .cse53) .cse54))) (let ((.cse44 (select .cse50 .cse51)) (.cse45 (+ (select (select .cse52 .cse53) .cse54) 4))) (let ((.cse41 (store .cse52 .cse51 (store (select .cse52 .cse51) .cse45 0))) (.cse46 (store .cse50 .cse51 (store .cse44 .cse45 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse48 (select (select .cse46 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse49 (+ (select (select .cse41 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse47 (select (select .cse41 .cse48) .cse49))) (let ((.cse43 (+ .cse47 4)) (.cse42 (select (select .cse46 .cse48) .cse49))) (or (= (select (select .cse41 .cse42) .cse43) 0) (not (= (select .cse44 .cse45) 0)) (= (select (select .cse46 .cse42) .cse43) .cse42) (= .cse47 0))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (or (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int) (v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse65 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse63 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse66 (select (select .cse63 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse67 (+ 4 (select (select .cse65 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse64 (select (select .cse63 .cse66) .cse67))) (let ((.cse55 (select .cse63 .cse64)) (.cse56 (+ (select (select .cse65 .cse66) .cse67) 4))) (let ((.cse60 (store .cse65 .cse64 (store (select .cse65 .cse64) .cse56 0))) (.cse59 (store .cse63 .cse64 (store .cse55 .cse56 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse61 (select (select .cse59 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse62 (+ (select (select .cse60 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse58 (select (select .cse59 .cse61) .cse62))) (let ((.cse57 (select (select .cse59 .cse58) (+ (select (select .cse60 .cse61) .cse62) 4)))) (or (not (= (select .cse55 .cse56) 0)) (= .cse57 .cse58) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse57) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))))))))))) .cse40) (or .cse68 (and (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse79 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse78 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse80 (select (select .cse78 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse81 (+ 4 (select (select .cse79 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse76 (select (select .cse78 .cse80) .cse81))) (let ((.cse74 (select .cse78 .cse76)) (.cse75 (+ (select (select .cse79 .cse80) .cse81) 4))) (let ((.cse69 (store .cse79 .cse76 (store (select .cse79 .cse76) .cse75 0))) (.cse77 (store .cse78 .cse76 (store .cse74 .cse75 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse72 (select (select .cse77 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse73 (+ (select (select .cse69 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse70 (select (select .cse77 .cse72) .cse73))) (or (let ((.cse71 (select (select .cse69 .cse72) .cse73))) (= (select (select .cse69 .cse70) (+ .cse71 4)) .cse71)) (not (= (select .cse74 .cse75) 0)) (not (= .cse70 .cse76))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse91 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse89 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse92 (select (select .cse89 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse93 (+ 4 (select (select .cse91 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse90 (select (select .cse89 .cse92) .cse93))) (let ((.cse87 (select .cse89 .cse90)) (.cse88 (+ (select (select .cse91 .cse92) .cse93) 4))) (let ((.cse82 (store .cse91 .cse90 (store (select .cse91 .cse90) .cse88 0))) (.cse83 (store .cse89 .cse90 (store .cse87 .cse88 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse84 (select (select .cse83 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse85 (+ (select (select .cse82 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse86 (select (select .cse82 .cse84) .cse85))) (or (= (select (select .cse82 (select (select .cse83 .cse84) .cse85)) (+ .cse86 4)) .cse86) (not (= (select .cse87 .cse88) 0)) (= .cse86 0)))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse104 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse102 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse105 (select (select .cse102 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse106 (+ 4 (select (select .cse104 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse103 (select (select .cse102 .cse105) .cse106))) (let ((.cse99 (select .cse102 .cse103)) (.cse100 (+ (select (select .cse104 .cse105) .cse106) 4))) (let ((.cse94 (store .cse104 .cse103 (store (select .cse104 .cse103) .cse100 0))) (.cse101 (store .cse102 .cse103 (store .cse99 .cse100 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse97 (select (select .cse101 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse98 (+ (select (select .cse94 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse95 (select (select .cse101 .cse97) .cse98))) (or (let ((.cse96 (select (select .cse94 .cse97) .cse98))) (= (select (select .cse94 .cse95) (+ .cse96 4)) .cse96)) (not (= (select .cse99 .cse100) 0)) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse95)))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse118 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse117 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse119 (select (select .cse117 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse120 (+ 4 (select (select .cse118 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse114 (select (select .cse117 .cse119) .cse120))) (let ((.cse111 (select .cse117 .cse114)) (.cse112 (+ (select (select .cse118 .cse119) .cse120) 4))) (let ((.cse107 (store .cse118 .cse114 (store (select .cse118 .cse114) .cse112 0))) (.cse113 (store .cse117 .cse114 (store .cse111 .cse112 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse115 (select (select .cse113 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse116 (+ (select (select .cse107 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse110 (select (select .cse107 .cse115) .cse116))) (let ((.cse108 (select (select .cse113 .cse115) .cse116)) (.cse109 (+ .cse110 4))) (or (= (select (select .cse107 .cse108) .cse109) .cse110) (not (= (select .cse111 .cse112) 0)) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse108) (not (= (select (select .cse113 .cse108) .cse109) .cse114)))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse132 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse131 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse133 (select (select .cse131 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse134 (+ 4 (select (select .cse132 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse126 (select (select .cse131 .cse133) .cse134))) (let ((.cse121 (select .cse131 .cse126)) (.cse122 (+ (select (select .cse132 .cse133) .cse134) 4))) (let ((.cse128 (store .cse132 .cse126 (store (select .cse132 .cse126) .cse122 0))) (.cse127 (store .cse131 .cse126 (store .cse121 .cse122 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse129 (select (select .cse127 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse130 (+ (select (select .cse128 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse124 (select (select .cse127 .cse129) .cse130)) (.cse125 (select (select .cse128 .cse129) .cse130))) (let ((.cse123 (select (select .cse127 .cse124) (+ .cse125 4)))) (or (not (= (select .cse121 .cse122) 0)) (= .cse123 .cse124) (= .cse125 0) (not (= .cse123 .cse126)))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse145 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse144 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse146 (select (select .cse144 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse147 (+ 4 (select (select .cse145 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse139 (select (select .cse144 .cse146) .cse147))) (let ((.cse135 (select .cse144 .cse139)) (.cse136 (+ (select (select .cse145 .cse146) .cse147) 4))) (let ((.cse141 (store .cse145 .cse139 (store (select .cse145 .cse139) .cse136 0))) (.cse140 (store .cse144 .cse139 (store .cse135 .cse136 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse142 (select (select .cse140 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse143 (+ (select (select .cse141 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse138 (select (select .cse140 .cse142) .cse143))) (let ((.cse137 (select (select .cse140 .cse138) (+ (select (select .cse141 .cse142) .cse143) 4)))) (or (not (= (select .cse135 .cse136) 0)) (= .cse137 .cse138) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse137) (not (= .cse138 .cse139)))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse159 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse158 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse160 (select (select .cse158 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse161 (+ 4 (select (select .cse159 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse155 (select (select .cse158 .cse160) .cse161))) (let ((.cse152 (select .cse158 .cse155)) (.cse153 (+ (select (select .cse159 .cse160) .cse161) 4))) (let ((.cse148 (store .cse159 .cse155 (store (select .cse159 .cse155) .cse153 0))) (.cse154 (store .cse158 .cse155 (store .cse152 .cse153 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse156 (select (select .cse154 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse157 (+ (select (select .cse148 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse151 (select (select .cse148 .cse156) .cse157))) (let ((.cse150 (+ .cse151 4)) (.cse149 (select (select .cse154 .cse156) .cse157))) (or (= (select (select .cse148 .cse149) .cse150) .cse151) (not (= (select .cse152 .cse153) 0)) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| (select (select .cse154 .cse149) .cse150)) (not (= .cse149 .cse155)))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse173 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse172 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse174 (select (select .cse172 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse175 (+ 4 (select (select .cse173 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse167 (select (select .cse172 .cse174) .cse175))) (let ((.cse164 (select .cse172 .cse167)) (.cse165 (+ (select (select .cse173 .cse174) .cse175) 4))) (let ((.cse168 (store .cse173 .cse167 (store (select .cse173 .cse167) .cse165 0))) (.cse171 (store .cse172 .cse167 (store .cse164 .cse165 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse169 (select (select .cse171 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse170 (+ (select (select .cse168 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse166 (select (select .cse171 .cse169) .cse170)) (.cse163 (select (select .cse168 .cse169) .cse170))) (let ((.cse162 (select (select .cse168 .cse166) (+ .cse163 4)))) (or (= .cse162 0) (= .cse162 .cse163) (not (= (select .cse164 .cse165) 0)) (not (= .cse166 .cse167)))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse186 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse184 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse187 (select (select .cse184 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse188 (+ 4 (select (select .cse186 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse185 (select (select .cse184 .cse187) .cse188))) (let ((.cse176 (select .cse184 .cse185)) (.cse177 (+ (select (select .cse186 .cse187) .cse188) 4))) (let ((.cse181 (store .cse186 .cse185 (store (select .cse186 .cse185) .cse177 0))) (.cse180 (store .cse184 .cse185 (store .cse176 .cse177 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse182 (select (select .cse180 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse183 (+ (select (select .cse181 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse179 (select (select .cse180 .cse182) .cse183))) (let ((.cse178 (select (select .cse180 .cse179) (+ (select (select .cse181 .cse182) .cse183) 4)))) (or (not (= (select .cse176 .cse177) 0)) (= .cse178 .cse179) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse179) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse178))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse200 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse198 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse201 (select (select .cse198 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse202 (+ 4 (select (select .cse200 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse199 (select (select .cse198 .cse201) .cse202))) (let ((.cse193 (select .cse198 .cse199)) (.cse194 (+ (select (select .cse200 .cse201) .cse202) 4))) (let ((.cse189 (store .cse200 .cse199 (store (select .cse200 .cse199) .cse194 0))) (.cse195 (store .cse198 .cse199 (store .cse193 .cse194 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse196 (select (select .cse195 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse197 (+ (select (select .cse189 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse192 (select (select .cse189 .cse196) .cse197))) (let ((.cse190 (select (select .cse195 .cse196) .cse197)) (.cse191 (+ .cse192 4))) (or (= (select (select .cse189 .cse190) .cse191) .cse192) (not (= (select .cse193 .cse194) 0)) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse190) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| (select (select .cse195 .cse190) .cse191)))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse213 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse212 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse214 (select (select .cse212 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse215 (+ 4 (select (select .cse213 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse209 (select (select .cse212 .cse214) .cse215))) (let ((.cse206 (select .cse212 .cse209)) (.cse207 (+ (select (select .cse213 .cse214) .cse215) 4))) (let ((.cse203 (store .cse213 .cse209 (store (select .cse213 .cse209) .cse207 0))) (.cse208 (store .cse212 .cse209 (store .cse206 .cse207 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse210 (select (select .cse208 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse211 (+ (select (select .cse203 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse205 (+ (select (select .cse203 .cse210) .cse211) 4)) (.cse204 (select (select .cse208 .cse210) .cse211))) (or (= (select (select .cse203 .cse204) .cse205) 0) (not (= (select .cse206 .cse207) 0)) (= (select (select .cse208 .cse204) .cse205) .cse204) (not (= .cse204 .cse209))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (or .cse40 (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int) (v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse227 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse226 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse228 (select (select .cse226 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse229 (+ 4 (select (select .cse227 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse223 (select (select .cse226 .cse228) .cse229))) (let ((.cse220 (select .cse226 .cse223)) (.cse221 (+ (select (select .cse227 .cse228) .cse229) 4))) (let ((.cse216 (store .cse227 .cse223 (store (select .cse227 .cse223) .cse221 0))) (.cse222 (store .cse226 .cse223 (store .cse220 .cse221 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse224 (select (select .cse222 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse225 (+ (select (select .cse216 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse219 (select (select .cse216 .cse224) .cse225))) (let ((.cse217 (select (select .cse222 .cse224) .cse225)) (.cse218 (+ .cse219 4))) (or (= (select (select .cse216 .cse217) .cse218) .cse219) (not (= (select .cse220 .cse221) 0)) (not (= (select (select .cse222 .cse217) .cse218) .cse223)) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0))))))))))))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse240 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse238 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse241 (select (select .cse238 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse242 (+ 4 (select (select .cse240 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse239 (select (select .cse238 .cse241) .cse242))) (let ((.cse233 (select .cse238 .cse239)) (.cse234 (+ (select (select .cse240 .cse241) .cse242) 4))) (let ((.cse230 (store .cse240 .cse239 (store (select .cse240 .cse239) .cse234 0))) (.cse235 (store .cse238 .cse239 (store .cse233 .cse234 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse236 (select (select .cse235 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse237 (+ (select (select .cse230 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse232 (+ (select (select .cse230 .cse236) .cse237) 4)) (.cse231 (select (select .cse235 .cse236) .cse237))) (or (= (select (select .cse230 .cse231) .cse232) 0) (not (= (select .cse233 .cse234) 0)) (= (select (select .cse235 .cse231) .cse232) .cse231) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse231)))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (or .cse68 (and (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse252 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse250 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse253 (select (select .cse250 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse254 (+ 4 (select (select .cse252 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse251 (select (select .cse250 .cse253) .cse254))) (let ((.cse243 (select .cse250 .cse251)) (.cse244 (+ (select (select .cse252 .cse253) .cse254) 4))) (let ((.cse247 (store .cse252 .cse251 (store (select .cse252 .cse251) .cse244 0))) (.cse245 (store .cse250 .cse251 (store .cse243 .cse244 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse248 (select (select .cse245 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse249 (+ (select (select .cse247 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse246 (select (select .cse245 .cse248) .cse249))) (or (not (= (select .cse243 .cse244) 0)) (= (select (select .cse245 .cse246) (+ (select (select .cse247 .cse248) .cse249) 4)) .cse246) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse246)))))))))) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse264 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse263 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse265 (select (select .cse263 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse266 (+ 4 (select (select .cse264 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse262 (select (select .cse263 .cse265) .cse266))) (let ((.cse255 (select .cse263 .cse262)) (.cse256 (+ (select (select .cse264 .cse265) .cse266) 4))) (let ((.cse259 (store .cse264 .cse262 (store (select .cse264 .cse262) .cse256 0))) (.cse257 (store .cse263 .cse262 (store .cse255 .cse256 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse260 (select (select .cse257 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse261 (+ (select (select .cse259 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse258 (select (select .cse257 .cse260) .cse261))) (or (not (= (select .cse255 .cse256) 0)) (= (select (select .cse257 .cse258) (+ (select (select .cse259 .cse260) .cse261) 4)) .cse258) (not (= .cse258 .cse262))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse277 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse275 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse278 (select (select .cse275 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse279 (+ 4 (select (select .cse277 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse276 (select (select .cse275 .cse278) .cse279))) (let ((.cse267 (select .cse275 .cse276)) (.cse268 (+ (select (select .cse277 .cse278) .cse279) 4))) (let ((.cse274 (store .cse277 .cse276 (store (select .cse277 .cse276) .cse268 0))) (.cse269 (store .cse275 .cse276 (store .cse267 .cse268 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse272 (select (select .cse269 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse273 (+ (select (select .cse274 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse271 (select (select .cse274 .cse272) .cse273))) (or (not (= (select .cse267 .cse268) 0)) (let ((.cse270 (select (select .cse269 .cse272) .cse273))) (= (select (select .cse269 .cse270) (+ .cse271 4)) .cse270)) (= .cse271 0)))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))))) (or (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int) (v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse291 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse289 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse292 (select (select .cse289 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse293 (+ 4 (select (select .cse291 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse290 (select (select .cse289 .cse292) .cse293))) (let ((.cse284 (select .cse289 .cse290)) (.cse285 (+ (select (select .cse291 .cse292) .cse293) 4))) (let ((.cse280 (store .cse291 .cse290 (store (select .cse291 .cse290) .cse285 0))) (.cse286 (store .cse289 .cse290 (store .cse284 .cse285 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse287 (select (select .cse286 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse288 (+ (select (select .cse280 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse283 (select (select .cse280 .cse287) .cse288))) (let ((.cse281 (select (select .cse286 .cse287) .cse288)) (.cse282 (+ .cse283 4))) (or (= (select (select .cse280 .cse281) .cse282) .cse283) (not (= (select .cse284 .cse285) 0)) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| (select (select .cse286 .cse281) .cse282)) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))))))))))) .cse40) (or (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int) (v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse304 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse303 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse305 (select (select .cse303 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse306 (+ 4 (select (select .cse304 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse298 (select (select .cse303 .cse305) .cse306))) (let ((.cse294 (select .cse303 .cse298)) (.cse295 (+ (select (select .cse304 .cse305) .cse306) 4))) (let ((.cse300 (store .cse304 .cse298 (store (select .cse304 .cse298) .cse295 0))) (.cse299 (store .cse303 .cse298 (store .cse294 .cse295 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse301 (select (select .cse299 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse302 (+ (select (select .cse300 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse297 (select (select .cse299 .cse301) .cse302))) (let ((.cse296 (select (select .cse299 .cse297) (+ (select (select .cse300 .cse301) .cse302) 4)))) (or (not (= (select .cse294 .cse295) 0)) (= .cse296 .cse297) (not (= .cse296 .cse298)) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))))))))))) .cse40) (or (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int) (v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse317 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse315 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse318 (select (select .cse315 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse319 (+ 4 (select (select .cse317 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse316 (select (select .cse315 .cse318) .cse319))) (let ((.cse309 (select .cse315 .cse316)) (.cse310 (+ (select (select .cse317 .cse318) .cse319) 4))) (let ((.cse311 (store .cse317 .cse316 (store (select .cse317 .cse316) .cse310 0))) (.cse312 (store .cse315 .cse316 (store .cse309 .cse310 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse313 (select (select .cse312 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse314 (+ (select (select .cse311 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse308 (select (select .cse311 .cse313) .cse314))) (let ((.cse307 (select (select .cse311 (select (select .cse312 .cse313) .cse314)) (+ .cse308 4)))) (or (= .cse307 0) (= .cse307 .cse308) (not (= (select .cse309 .cse310) 0)) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))))))))))) .cse40) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse331 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse329 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse332 (select (select .cse329 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse333 (+ 4 (select (select .cse331 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse330 (select (select .cse329 .cse332) .cse333))) (let ((.cse320 (select .cse329 .cse330)) (.cse321 (+ (select (select .cse331 .cse332) .cse333) 4))) (let ((.cse326 (store .cse331 .cse330 (store (select .cse331 .cse330) .cse321 0))) (.cse325 (store .cse329 .cse330 (store .cse320 .cse321 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse327 (select (select .cse325 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse328 (+ (select (select .cse326 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse323 (select (select .cse325 .cse327) .cse328)) (.cse324 (select (select .cse326 .cse327) .cse328))) (let ((.cse322 (select (select .cse325 .cse323) (+ .cse324 4)))) (or (not (= (select .cse320 .cse321) 0)) (= .cse322 .cse323) (= .cse324 0) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse322))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse344 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse342 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse345 (select (select .cse342 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse346 (+ 4 (select (select .cse344 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse343 (select (select .cse342 .cse345) .cse346))) (let ((.cse336 (select .cse342 .cse343)) (.cse337 (+ (select (select .cse344 .cse345) .cse346) 4))) (let ((.cse338 (store .cse344 .cse343 (store (select .cse344 .cse343) .cse337 0))) (.cse339 (store .cse342 .cse343 (store .cse336 .cse337 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse340 (select (select .cse339 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse341 (+ (select (select .cse338 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse335 (select (select .cse338 .cse340) .cse341))) (let ((.cse334 (select (select .cse338 (select (select .cse339 .cse340) .cse341)) (+ .cse335 4)))) (or (= .cse334 0) (= .cse334 .cse335) (not (= (select .cse336 .cse337) 0)) (= .cse335 0))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse358 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse356 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse359 (select (select .cse356 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse360 (+ 4 (select (select .cse358 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse357 (select (select .cse356 .cse359) .cse360))) (let ((.cse351 (select .cse356 .cse357)) (.cse352 (+ (select (select .cse358 .cse359) .cse360) 4))) (let ((.cse347 (store .cse358 .cse357 (store (select .cse358 .cse357) .cse352 0))) (.cse353 (store .cse356 .cse357 (store .cse351 .cse352 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse354 (select (select .cse353 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse355 (+ (select (select .cse347 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse350 (select (select .cse347 .cse354) .cse355))) (let ((.cse348 (select (select .cse353 .cse354) .cse355)) (.cse349 (+ .cse350 4))) (or (= (select (select .cse347 .cse348) .cse349) .cse350) (not (= (select .cse351 .cse352) 0)) (= .cse350 0) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| (select (select .cse353 .cse348) .cse349)))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse372 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse370 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse373 (select (select .cse370 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse374 (+ 4 (select (select .cse372 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse371 (select (select .cse370 .cse373) .cse374))) (let ((.cse363 (select .cse370 .cse371)) (.cse364 (+ (select (select .cse372 .cse373) .cse374) 4))) (let ((.cse366 (store .cse372 .cse371 (store (select .cse372 .cse371) .cse364 0))) (.cse369 (store .cse370 .cse371 (store .cse363 .cse364 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse367 (select (select .cse369 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse368 (+ (select (select .cse366 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse365 (select (select .cse369 .cse367) .cse368)) (.cse362 (select (select .cse366 .cse367) .cse368))) (let ((.cse361 (select (select .cse366 .cse365) (+ .cse362 4)))) (or (= .cse361 0) (= .cse361 .cse362) (not (= (select .cse363 .cse364) 0)) (= |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| .cse365))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0)))) (forall ((|v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| Int)) (or (forall ((v_ArrVal_1232 (Array Int Int)) (v_ArrVal_1231 (Array Int Int))) (let ((.cse386 (store |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1231)) (.cse385 (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| v_ArrVal_1232))) (let ((.cse387 (select (select .cse385 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)) (.cse388 (+ 4 (select (select .cse386 |c_ULTIMATE.start_sll_append_~head#1.base|) |c_ULTIMATE.start_sll_append_~head#1.offset|)))) (let ((.cse382 (select (select .cse385 .cse387) .cse388))) (let ((.cse379 (select .cse385 .cse382)) (.cse380 (+ (select (select .cse386 .cse387) .cse388) 4))) (let ((.cse375 (store .cse386 .cse382 (store (select .cse386 .cse382) .cse380 0))) (.cse381 (store .cse385 .cse382 (store .cse379 .cse380 |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|)))) (let ((.cse383 (select (select .cse381 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (.cse384 (+ (select (select .cse375 |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|) 4))) (let ((.cse378 (select (select .cse375 .cse383) .cse384))) (let ((.cse377 (+ .cse378 4)) (.cse376 (select (select .cse381 .cse383) .cse384))) (or (= (select (select .cse375 .cse376) .cse377) .cse378) (not (= (select .cse379 .cse380) 0)) (not (= (select (select .cse381 .cse376) .cse377) .cse382)) (not (= .cse376 .cse382)))))))))))) (not (< |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35| |c_#StackHeapBarrier|)) (not (= (select |c_#valid| |v_ULTIMATE.start_sll_append_#t~ret7#1.base_35|) 0))))))) is different from true [2022-12-14 14:29:22,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050716476] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:29:22,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1087313083] [2022-12-14 14:29:22,667 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 14:29:22,667 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:29:22,667 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:29:22,667 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:29:22,668 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:29:22,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:22,699 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:29:22,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:29:22,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:22,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-12-14 14:29:22,732 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 [2022-12-14 14:29:22,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:29:22,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:22,743 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 20 treesize of output 9 [2022-12-14 14:29:22,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:22,753 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 16 treesize of output 17 [2022-12-14 14:29:22,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:22,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 9 [2022-12-14 14:29:22,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:22,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:29:22,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:22,790 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 [2022-12-14 14:29:22,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:22,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:29:22,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:22,843 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 [2022-12-14 14:29:22,862 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:22,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:29:22,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:22,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:29:22,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:22,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 14:29:22,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:29:22,922 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 [2022-12-14 14:29:22,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:22,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:22,947 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 [2022-12-14 14:29:22,975 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 [2022-12-14 14:29:22,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:29:22,992 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 [2022-12-14 14:29:23,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:23,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:23,040 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 13 treesize of output 9 [2022-12-14 14:29:23,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:29:23,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:23,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 7 [2022-12-14 14:29:23,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 14:29:23,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:23,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:29:23,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:29:23,378 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:23,378 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 141 treesize of output 158 [2022-12-14 14:29:23,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:23,411 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 133 treesize of output 144 [2022-12-14 14:29:23,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 119 [2022-12-14 14:29:23,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:23,441 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:23,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 111 [2022-12-14 14:29:23,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:23,804 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:23,804 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 141 treesize of output 158 [2022-12-14 14:29:23,839 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:23,839 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 133 treesize of output 144 [2022-12-14 14:29:23,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 119 [2022-12-14 14:29:23,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:23,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:23,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 111 [2022-12-14 14:29:24,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:24,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:29:24,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:29:24,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:29:24,301 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-12-14 14:29:24,308 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 [2022-12-14 14:29:24,313 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 [2022-12-14 14:29:24,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:24,331 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 16 treesize of output 17 [2022-12-14 14:29:24,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:24,338 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 20 treesize of output 9 [2022-12-14 14:29:24,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:24,346 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 20 treesize of output 9 [2022-12-14 14:29:24,347 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:29:29,979 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2712#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~new_head~0#1.offset|) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |#NULL.offset| 0) (<= |ULTIMATE.start_sll_create_~new_head~0#1.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#NULL.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:29:29,979 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:29:29,979 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:29:29,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29] total 52 [2022-12-14 14:29:29,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111103455] [2022-12-14 14:29:29,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:29:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-14 14:29:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:29:29,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-14 14:29:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=6079, Unknown=2, NotChecked=156, Total=6480 [2022-12-14 14:29:29,982 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 52 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 42 states have internal predecessors, (52), 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) [2022-12-14 14:29:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:37,899 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2022-12-14 14:29:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 14:29:37,900 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 42 states have internal predecessors, (52), 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 33 [2022-12-14 14:29:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:37,900 INFO L225 Difference]: With dead ends: 61 [2022-12-14 14:29:37,900 INFO L226 Difference]: Without dead ends: 59 [2022-12-14 14:29:37,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2141 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=645, Invalid=9659, Unknown=2, NotChecked=200, Total=10506 [2022-12-14 14:29:37,901 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 264 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:37,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 231 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 14:29:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-14 14:29:37,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2022-12-14 14:29:37,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 14:29:37,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2022-12-14 14:29:37,918 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 33 [2022-12-14 14:29:37,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:37,918 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2022-12-14 14:29:37,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 42 states have internal predecessors, (52), 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) [2022-12-14 14:29:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2022-12-14 14:29:37,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 14:29:37,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:37,919 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:29:37,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-14 14:29:38,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 14:29:38,120 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:29:38,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:38,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2106225061, now seen corresponding path program 1 times [2022-12-14 14:29:38,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:29:38,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505200521] [2022-12-14 14:29:38,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:38,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:29:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:29:39,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:29:39,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505200521] [2022-12-14 14:29:39,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505200521] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:29:39,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181452162] [2022-12-14 14:29:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:39,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:29:39,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:29:39,865 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:29:39,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 14:29:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:29:40,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 137 conjunts are in the unsatisfiable core [2022-12-14 14:29:40,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:29:40,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:29:40,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:40,580 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:29:40,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 14:29:40,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:40,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:29:40,940 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:40,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 32 [2022-12-14 14:29:40,948 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:29:40,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:29:40,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:29:41,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:41,153 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-12-14 14:29:41,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 65 [2022-12-14 14:29:41,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:41,182 INFO L321 Elim1Store]: treesize reduction 31, result has 35.4 percent of original size [2022-12-14 14:29:41,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 38 [2022-12-14 14:29:41,227 INFO L321 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2022-12-14 14:29:41,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 14:29:42,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:42,308 INFO L321 Elim1Store]: treesize reduction 139, result has 14.7 percent of original size [2022-12-14 14:29:42,308 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 7 new quantified variables, introduced 9 case distinctions, treesize of input 200 treesize of output 102 [2022-12-14 14:29:42,349 INFO L321 Elim1Store]: treesize reduction 128, result has 14.7 percent of original size [2022-12-14 14:29:42,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 264 treesize of output 168 [2022-12-14 14:29:42,690 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-12-14 14:29:42,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 219 treesize of output 141 [2022-12-14 14:29:43,014 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 14:29:43,014 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 40 [2022-12-14 14:29:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:29:43,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:29:44,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181452162] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:29:44,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [803326794] [2022-12-14 14:29:44,792 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2022-12-14 14:29:44,792 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:29:44,792 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:29:44,792 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:29:44,793 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:29:44,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:44,821 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:29:44,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 26 [2022-12-14 14:29:44,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:44,847 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:29:44,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:29:44,871 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 [2022-12-14 14:29:44,874 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 [2022-12-14 14:29:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:44,882 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 20 treesize of output 9 [2022-12-14 14:29:44,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:44,888 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 20 treesize of output 9 [2022-12-14 14:29:44,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:44,899 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 16 treesize of output 17 [2022-12-14 14:29:44,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:44,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:29:44,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:44,930 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 [2022-12-14 14:29:44,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:44,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 14:29:44,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:44,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:29:45,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:45,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:45,014 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 207 treesize of output 187 [2022-12-14 14:29:45,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:45,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 201 treesize of output 187 [2022-12-14 14:29:45,032 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:29:45,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 98 [2022-12-14 14:29:45,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:29:45,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:45,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 14:29:45,092 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 [2022-12-14 14:29:45,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 14:29:45,120 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 [2022-12-14 14:29:45,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:29:45,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:45,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:45,151 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 [2022-12-14 14:29:45,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:29:45,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:45,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:45,247 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 57 treesize of output 51 [2022-12-14 14:29:45,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 52 [2022-12-14 14:29:45,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2022-12-14 14:29:45,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 52 [2022-12-14 14:29:45,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:29:45,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:29:45,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-12-14 14:29:45,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:29:45,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:45,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:45,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:29:45,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:29:45,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:29:45,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:29:45,802 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-12-14 14:29:45,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 14:29:45,815 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 [2022-12-14 14:29:45,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:45,827 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 20 treesize of output 9 [2022-12-14 14:29:45,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:45,836 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 16 treesize of output 17 [2022-12-14 14:29:45,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:29:45,843 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 20 treesize of output 9 [2022-12-14 14:29:45,844 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:29:51,203 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3133#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (not (= |ULTIMATE.start_main_~count~0#1| (+ |ULTIMATE.start_main_~len~0#1| 1))) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.offset| 0) (= |ULTIMATE.start_main_~ptr~0#1.base| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:29:51,203 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:29:51,203 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:29:51,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28] total 47 [2022-12-14 14:29:51,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553829335] [2022-12-14 14:29:51,203 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:29:51,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-14 14:29:51,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:29:51,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-14 14:29:51,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=5314, Unknown=0, NotChecked=0, Total=5550 [2022-12-14 14:29:51,205 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 47 states, 40 states have (on average 1.175) internal successors, (47), 38 states have internal predecessors, (47), 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) [2022-12-14 14:29:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:29:56,948 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2022-12-14 14:29:56,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 14:29:56,949 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 40 states have (on average 1.175) internal successors, (47), 38 states have internal predecessors, (47), 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 33 [2022-12-14 14:29:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:29:56,949 INFO L225 Difference]: With dead ends: 59 [2022-12-14 14:29:56,949 INFO L226 Difference]: Without dead ends: 56 [2022-12-14 14:29:56,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1820 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=690, Invalid=8816, Unknown=0, NotChecked=0, Total=9506 [2022-12-14 14:29:56,950 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 180 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 878 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 878 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:29:56,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 323 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 878 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 14:29:56,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-14 14:29:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2022-12-14 14:29:56,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 14:29:56,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2022-12-14 14:29:56,966 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 33 [2022-12-14 14:29:56,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:29:56,966 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2022-12-14 14:29:56,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 40 states have (on average 1.175) internal successors, (47), 38 states have internal predecessors, (47), 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) [2022-12-14 14:29:56,967 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2022-12-14 14:29:56,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 14:29:56,967 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:29:56,967 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:29:56,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 14:29:57,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 14:29:57,169 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:29:57,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:29:57,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1830631757, now seen corresponding path program 3 times [2022-12-14 14:29:57,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:29:57,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766583814] [2022-12-14 14:29:57,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:29:57,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:29:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:30:00,719 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:30:00,720 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:30:00,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766583814] [2022-12-14 14:30:00,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766583814] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:30:00,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574455561] [2022-12-14 14:30:00,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 14:30:00,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:30:00,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:30:00,721 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:30:00,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 14:30:01,089 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 14:30:01,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:30:01,093 WARN L261 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 188 conjunts are in the unsatisfiable core [2022-12-14 14:30:01,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:30:01,219 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 [2022-12-14 14:30:01,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:30:01,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:30:01,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:01,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:30:01,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:01,734 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 [2022-12-14 14:30:01,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:01,959 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:30:01,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 14:30:01,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:02,002 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:30:02,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2022-12-14 14:30:02,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:02,043 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-12-14 14:30:02,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2022-12-14 14:30:02,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:30:02,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 14:30:02,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:02,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-12-14 14:30:02,646 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 14:30:02,647 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 96 treesize of output 50 [2022-12-14 14:30:02,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:02,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select 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 [2022-12-14 14:30:02,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:30:02,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:02,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:02,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:02,955 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-12-14 14:30:02,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 112 treesize of output 83 [2022-12-14 14:30:02,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:02,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:02,982 INFO L321 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-12-14 14:30:02,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 22 [2022-12-14 14:30:02,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-14 14:30:03,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:03,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:03,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:03,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:03,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-12-14 14:30:04,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:04,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:04,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:05,169 INFO L321 Elim1Store]: treesize reduction 365, result has 9.7 percent of original size [2022-12-14 14:30:05,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 26 case distinctions, treesize of input 340 treesize of output 135 [2022-12-14 14:30:05,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:05,246 INFO L321 Elim1Store]: treesize reduction 164, result has 18.4 percent of original size [2022-12-14 14:30:05,246 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 7 new quantified variables, introduced 8 case distinctions, treesize of input 289 treesize of output 204 [2022-12-14 14:30:05,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:05,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2022-12-14 14:30:05,771 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:05,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:05,856 INFO L321 Elim1Store]: treesize reduction 151, result has 18.8 percent of original size [2022-12-14 14:30:05,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 284 treesize of output 131 [2022-12-14 14:30:05,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:05,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:05,895 INFO L321 Elim1Store]: treesize reduction 58, result has 4.9 percent of original size [2022-12-14 14:30:05,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 24 [2022-12-14 14:30:06,133 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-14 14:30:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:30:06,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:30:12,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574455561] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:30:12,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [25616678] [2022-12-14 14:30:12,494 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 14:30:12,494 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:30:12,494 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:30:12,495 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:30:12,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:30:12,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,523 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:30:12,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 26 [2022-12-14 14:30:12,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,551 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:30:12,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:30:12,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:30:12,581 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 [2022-12-14 14:30:12,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,589 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 20 treesize of output 9 [2022-12-14 14:30:12,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,597 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 16 treesize of output 17 [2022-12-14 14:30:12,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,603 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 20 treesize of output 9 [2022-12-14 14:30:12,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,618 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 [2022-12-14 14:30:12,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:30:12,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:30:12,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,665 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 [2022-12-14 14:30:12,690 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:12,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:30:12,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 14:30:12,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:12,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:30:12,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:12,744 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 9 treesize of output 3 [2022-12-14 14:30:12,752 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 [2022-12-14 14:30:12,760 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 [2022-12-14 14:30:12,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:12,792 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 [2022-12-14 14:30:12,800 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 [2022-12-14 14:30:12,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:12,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:12,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:12,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:12,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:12,878 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 226 treesize of output 206 [2022-12-14 14:30:12,887 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:12,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 206 [2022-12-14 14:30:12,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:12,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 208 [2022-12-14 14:30:12,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 14:30:12,963 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 [2022-12-14 14:30:12,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:12,982 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 [2022-12-14 14:30:12,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:13,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:13,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:13,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 14:30:13,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:13,043 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 [2022-12-14 14:30:13,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:13,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:13,087 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 226 treesize of output 206 [2022-12-14 14:30:13,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:13,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 220 treesize of output 206 [2022-12-14 14:30:13,106 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:13,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 208 [2022-12-14 14:30:13,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:13,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:13,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:13,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:13,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:30:13,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:30:13,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:30:13,595 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 11 for LOIs [2022-12-14 14:30:13,601 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 [2022-12-14 14:30:13,605 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 [2022-12-14 14:30:13,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:13,617 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 16 treesize of output 17 [2022-12-14 14:30:13,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:13,623 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 20 treesize of output 9 [2022-12-14 14:30:13,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:13,629 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 20 treesize of output 9 [2022-12-14 14:30:13,630 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:30:20,018 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3557#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |#NULL.offset| 0) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (<= 0 |ULTIMATE.start_sll_create_~len#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~#s~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (<= 0 |#NULL.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_main_~#s~0#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:30:20,018 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:30:20,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:30:20,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 51 [2022-12-14 14:30:20,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373250474] [2022-12-14 14:30:20,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:30:20,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 14:30:20,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:30:20,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 14:30:20,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=5884, Unknown=4, NotChecked=0, Total=6162 [2022-12-14 14:30:20,020 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 51 states, 43 states have (on average 1.186046511627907) internal successors, (51), 42 states have internal predecessors, (51), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 14:30:29,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:30:29,805 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2022-12-14 14:30:29,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-14 14:30:29,805 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 43 states have (on average 1.186046511627907) internal successors, (51), 42 states have internal predecessors, (51), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 33 [2022-12-14 14:30:29,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:30:29,806 INFO L225 Difference]: With dead ends: 79 [2022-12-14 14:30:29,806 INFO L226 Difference]: Without dead ends: 76 [2022-12-14 14:30:29,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2301 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=642, Invalid=9454, Unknown=4, NotChecked=0, Total=10100 [2022-12-14 14:30:29,807 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 128 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 14:30:29,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 372 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 14:30:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-14 14:30:29,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 49. [2022-12-14 14:30:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 42 states have internal predecessors, (50), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 14:30:29,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2022-12-14 14:30:29,824 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 33 [2022-12-14 14:30:29,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:30:29,824 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2022-12-14 14:30:29,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 43 states have (on average 1.186046511627907) internal successors, (51), 42 states have internal predecessors, (51), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 14:30:29,825 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2022-12-14 14:30:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 14:30:29,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:30:29,825 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:30:29,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-14 14:30:30,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 14:30:30,027 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:30:30,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:30:30,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2017781363, now seen corresponding path program 3 times [2022-12-14 14:30:30,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:30:30,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844621772] [2022-12-14 14:30:30,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:30:30,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:30:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:30:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-14 14:30:31,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:30:31,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844621772] [2022-12-14 14:30:31,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844621772] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:30:31,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822075742] [2022-12-14 14:30:31,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 14:30:31,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:30:31,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:30:31,458 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:30:31,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 14:30:31,835 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 14:30:31,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 14:30:31,839 WARN L261 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 181 conjunts are in the unsatisfiable core [2022-12-14 14:30:31,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:30:31,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 14:30:31,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-12-14 14:30:32,074 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 14:30:32,074 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 [2022-12-14 14:30:32,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:30:32,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:30:32,315 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:30:32,315 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 [2022-12-14 14:30:32,426 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:30:32,580 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-12-14 14:30:32,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2022-12-14 14:30:32,608 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 16 treesize of output 18 [2022-12-14 14:30:32,624 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 16 treesize of output 18 [2022-12-14 14:30:32,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:32,750 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 21 treesize of output 20 [2022-12-14 14:30:32,760 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 21 treesize of output 20 [2022-12-14 14:30:32,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:32,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 26 [2022-12-14 14:30:33,080 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 14:30:33,081 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 53 [2022-12-14 14:30:33,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:30:33,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-12-14 14:30:33,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:33,108 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 14:30:33,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 10 [2022-12-14 14:30:33,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:33,424 INFO L321 Elim1Store]: treesize reduction 52, result has 17.5 percent of original size [2022-12-14 14:30:33,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 97 treesize of output 89 [2022-12-14 14:30:33,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:33,439 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-14 14:30:33,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:33,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:33,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:33,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:33,458 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-12-14 14:30:33,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 48 [2022-12-14 14:30:33,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:33,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:33,494 INFO L321 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2022-12-14 14:30:33,495 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 3 case distinctions, treesize of input 33 treesize of output 33 [2022-12-14 14:30:34,219 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 14:30:34,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 14:30:34,399 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1652 (Array Int Int)) (v_ArrVal_1654 Int)) (= |c_ULTIMATE.start_main_~data~0#1| (let ((.cse0 (+ |c_ULTIMATE.start_sll_append_~last~0#1.offset| 4))) (select (select (store |c_#memory_int| |c_ULTIMATE.start_sll_append_~last~0#1.base| v_ArrVal_1652) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_sll_append_~last~0#1.base|) .cse0 v_ArrVal_1654)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|)) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_append_~last~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_sll_append_~last~0#1.base|) .cse0 |c_ULTIMATE.start_sll_append_~new_last~0#1.offset|)) |c_ULTIMATE.start_main_~#s~0#1.base|) |c_ULTIMATE.start_main_~#s~0#1.offset|))))) is different from false [2022-12-14 14:30:36,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822075742] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:30:36,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [7628928] [2022-12-14 14:30:36,431 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2022-12-14 14:30:36,431 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 14:30:36,431 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 14:30:36,431 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 14:30:36,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 14:30:36,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:36,461 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 14:30:36,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 26 [2022-12-14 14:30:36,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:36,488 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:30:36,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-12-14 14:30:36,510 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 [2022-12-14 14:30:36,515 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 [2022-12-14 14:30:36,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:36,523 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 20 treesize of output 9 [2022-12-14 14:30:36,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:36,531 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 16 treesize of output 17 [2022-12-14 14:30:36,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:36,537 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 20 treesize of output 9 [2022-12-14 14:30:36,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:36,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:30:36,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:36,564 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 [2022-12-14 14:30:36,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:36,591 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 [2022-12-14 14:30:36,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:36,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-12-14 14:30:36,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:36,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:30:36,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 14:30:36,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 13 [2022-12-14 14:30:36,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:36,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2022-12-14 14:30:36,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:36,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:36,692 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 [2022-12-14 14:30:36,699 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 [2022-12-14 14:30:36,706 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 [2022-12-14 14:30:36,729 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 [2022-12-14 14:30:36,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:36,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:36,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 14:30:36,762 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 [2022-12-14 14:30:36,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:30:36,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:30:36,811 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 13 treesize of output 9 [2022-12-14 14:30:36,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 7 [2022-12-14 14:30:36,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 7 [2022-12-14 14:30:36,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:30:36,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:30:36,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 14:30:37,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:30:37,114 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 141 treesize of output 152 [2022-12-14 14:30:37,144 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:30:37,145 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 135 treesize of output 152 [2022-12-14 14:30:37,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 119 [2022-12-14 14:30:37,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:37,173 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:30:37,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 111 [2022-12-14 14:30:37,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:37,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-14 14:30:37,521 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:30:37,521 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 141 treesize of output 158 [2022-12-14 14:30:37,547 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:30:37,547 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 133 treesize of output 144 [2022-12-14 14:30:37,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 119 [2022-12-14 14:30:37,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:37,575 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 14:30:37,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 111 [2022-12-14 14:30:37,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:30:37,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:30:37,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-14 14:30:37,916 INFO L197 IcfgInterpreter]: Interpreting procedure node_create with input of size 20 for LOIs [2022-12-14 14:30:37,923 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 [2022-12-14 14:30:37,928 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 [2022-12-14 14:30:37,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:37,942 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 20 treesize of output 9 [2022-12-14 14:30:37,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:37,948 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 20 treesize of output 9 [2022-12-14 14:30:37,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:37,960 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 16 treesize of output 17 [2022-12-14 14:30:37,961 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 14:30:42,649 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3994#(and (<= 0 |ULTIMATE.start_sll_append_~head#1.offset|) (<= 1 |ULTIMATE.start_sll_create_#in~data#1|) (= |ULTIMATE.start_main_~ptr~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|)) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#s~0#1.base|) |ULTIMATE.start_main_~#s~0#1.offset|) |ULTIMATE.start_main_~ptr~0#1.offset|) (<= |ULTIMATE.start_sll_append_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~data#1| 1) (or (not (= |ULTIMATE.start_main_~ptr~0#1.base| 0)) (not (= |ULTIMATE.start_main_~ptr~0#1.offset| 0))) (<= 0 |ULTIMATE.start_sll_append_~head#1.base|) (<= |ULTIMATE.start_sll_create_~head~0#1.offset| 0) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.offset|) (<= 0 |ULTIMATE.start_sll_create_~new_head~0#1.offset|) (= |ULTIMATE.start_main_~temp~2#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4))) (<= |ULTIMATE.start_sll_create_~len#1| 0) (<= |ULTIMATE.start_sll_create_#res#1.offset| 0) (<= |ULTIMATE.start_sll_create_~new_head~0#1.offset| 0) (= |ULTIMATE.start_main_~count~0#1| 0) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_sll_append_~last~0#1.base|) (+ |ULTIMATE.start_sll_append_~last~0#1.offset| 4)) |ULTIMATE.start_sll_append_~new_last~0#1.offset|) (<= 1 |ULTIMATE.start_sll_create_~data#1|) (<= |ULTIMATE.start_sll_append_#in~data#1| 1) (<= 0 |ULTIMATE.start_sll_append_#in~head#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_sll_append_~last~0#1.base|) (+ |ULTIMATE.start_sll_append_~last~0#1.offset| 4))) (<= |ULTIMATE.start_sll_append_#in~head#1.offset| 0) (not (= |ULTIMATE.start_main_~data~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~ptr~0#1.base|) |ULTIMATE.start_main_~ptr~0#1.offset|))) (= |ULTIMATE.start_main_~data~0#1| 1) (<= 1 |ULTIMATE.start_sll_append_~data#1|) (<= |ULTIMATE.start_sll_create_~data#1| 1) (<= |ULTIMATE.start_sll_create_#in~len#1| 2) (= |ULTIMATE.start_main_~#s~0#1.offset| 0) (= |ULTIMATE.start_main_~len~0#1| 2) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#s~0#1.base|) (= |ULTIMATE.start_sll_append_~new_last~0#1.offset| 0) (<= |ULTIMATE.start_sll_append_~head#1.offset| 0) (<= 0 |ULTIMATE.start_sll_create_#res#1.offset|) (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~ptr~0#1.base|) (+ |ULTIMATE.start_main_~ptr~0#1.offset| 4)) |ULTIMATE.start_main_~temp~2#1.offset|) (<= 0 |#StackHeapBarrier|) (<= 2 |ULTIMATE.start_sll_create_#in~len#1|) (<= 0 |ULTIMATE.start_sll_create_~head~0#1.offset|) (<= 1 |ULTIMATE.start_sll_append_#in~data#1|) (= |#NULL.base| 0))' at error location [2022-12-14 14:30:42,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 14:30:42,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 14:30:42,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21] total 39 [2022-12-14 14:30:42,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818922805] [2022-12-14 14:30:42,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 14:30:42,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-12-14 14:30:42,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:30:42,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-12-14 14:30:42,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=4062, Unknown=5, NotChecked=128, Total=4422 [2022-12-14 14:30:42,651 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 39 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 30 states have internal predecessors, (44), 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) [2022-12-14 14:30:44,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:30:44,836 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2022-12-14 14:30:44,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 14:30:44,837 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 30 states have internal predecessors, (44), 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 33 [2022-12-14 14:30:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:30:44,837 INFO L225 Difference]: With dead ends: 65 [2022-12-14 14:30:44,837 INFO L226 Difference]: Without dead ends: 48 [2022-12-14 14:30:44,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=365, Invalid=5334, Unknown=5, NotChecked=148, Total=5852 [2022-12-14 14:30:44,838 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 14:30:44,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 183 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 14:30:44,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-14 14:30:44,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2022-12-14 14:30:44,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 14:30:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2022-12-14 14:30:44,855 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 33 [2022-12-14 14:30:44,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:30:44,856 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2022-12-14 14:30:44,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 30 states have internal predecessors, (44), 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) [2022-12-14 14:30:44,856 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2022-12-14 14:30:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-14 14:30:44,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:30:44,856 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:30:44,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 14:30:45,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 14:30:45,058 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 14:30:45,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:30:45,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1098919118, now seen corresponding path program 4 times [2022-12-14 14:30:45,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:30:45,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971287520] [2022-12-14 14:30:45,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:30:45,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:30:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:30:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 14:30:48,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:30:48,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971287520] [2022-12-14 14:30:48,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971287520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:30:48,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927685015] [2022-12-14 14:30:48,485 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 14:30:48,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:30:48,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:30:48,486 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:30:48,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6977097a-0e89-48a4-86c5-d4b46360c036/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 14:30:48,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:30:48,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 154 conjunts are in the unsatisfiable core [2022-12-14 14:30:48,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:30:48,712 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 [2022-12-14 14:30:49,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:30:49,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-12-14 14:30:49,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:49,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select 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 [2022-12-14 14:30:49,166 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 [2022-12-14 14:30:49,452 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 14:30:49,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-12-14 14:30:49,466 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 16 treesize of output 18 [2022-12-14 14:30:49,479 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 16 treesize of output 18 [2022-12-14 14:30:49,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-14 14:30:49,651 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 29 treesize of output 28 [2022-12-14 14:30:50,025 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-12-14 14:30:50,025 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 127 treesize of output 60 [2022-12-14 14:30:50,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:50,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:50,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 12 [2022-12-14 14:30:50,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 14:30:50,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:50,308 INFO L321 Elim1Store]: treesize reduction 106, result has 12.4 percent of original size [2022-12-14 14:30:50,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 145 treesize of output 99 [2022-12-14 14:30:50,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:50,336 INFO L321 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2022-12-14 14:30:50,336 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 1 case distinctions, treesize of input 28 treesize of output 22 [2022-12-14 14:30:50,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:50,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:50,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:50,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:50,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 76 [2022-12-14 14:30:51,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:51,477 INFO L321 Elim1Store]: treesize reduction 194, result has 19.5 percent of original size [2022-12-14 14:30:51,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 13 case distinctions, treesize of input 150 treesize of output 119 [2022-12-14 14:30:51,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:51,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:51,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:51,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 14:30:51,556 INFO L321 Elim1Store]: treesize reduction 158, result has 22.9 percent of original size [2022-12-14 14:30:51,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 108 treesize of output 103 [2022-12-14 14:31:06,080 WARN L233 SmtUtils]: Spent 10.38s on a formula simplification. DAG size of input: 925 DAG size of output: 656 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 14:31:06,082 INFO L321 Elim1Store]: treesize reduction 969, result has 61.7 percent of original size [2022-12-14 14:31:06,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 37 new quantified variables, introduced 190 case distinctions, treesize of input 778 treesize of output 1934 [2022-12-14 14:31:06,383 INFO L217 Elim1Store]: Index analysis took 154 ms [2022-12-14 14:31:23,037 WARN L233 SmtUtils]: Spent 16.62s on a formula simplification. DAG size of input: 879 DAG size of output: 638 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 14:31:23,039 INFO L321 Elim1Store]: treesize reduction 821, result has 63.2 percent of original size [2022-12-14 14:31:23,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 1 disjoint index pairs (out of 190 index pairs), introduced 29 new quantified variables, introduced 188 case distinctions, treesize of input 1898 treesize of output 2614