./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/hash_fun.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/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_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/hash_fun.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/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_a09b700a-07c0-47f4-b9ee-74be5c23502f/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 0abab60f5c601fd8191c1a2aa712d4ab55460e987c7d41ca7527c2934792cc0b --- 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 08:08:06,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:08:06,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:08:06,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:08:06,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:08:06,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:08:06,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:08:06,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:08:06,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:08:06,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:08:06,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:08:06,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:08:06,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:08:06,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:08:06,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:08:06,463 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:08:06,464 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:08:06,465 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:08:06,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:08:06,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:08:06,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:08:06,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:08:06,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:08:06,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:08:06,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:08:06,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:08:06,478 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:08:06,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:08:06,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:08:06,480 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:08:06,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:08:06,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:08:06,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:08:06,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:08:06,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:08:06,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:08:06,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:08:06,485 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:08:06,485 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:08:06,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:08:06,486 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:08:06,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:08:06,509 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:08:06,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:08:06,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:08:06,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:08:06,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:08:06,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:08:06,510 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:08:06,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:08:06,511 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:08:06,511 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:08:06,511 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:08:06,511 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:08:06,511 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:08:06,512 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:08:06,512 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:08:06,512 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:08:06,512 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:08:06,512 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:08:06,513 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:08:06,513 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:08:06,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:08:06,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:08:06,514 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:08:06,514 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:08:06,514 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:08:06,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:08:06,515 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:08:06,515 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:08:06,515 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:08:06,515 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:08:06,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:08:06,516 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:08:06,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:08:06,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:08:06,516 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:08:06,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:08:06,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:08:06,517 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:08:06,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:08:06,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:08:06,517 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:08:06,517 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_a09b700a-07c0-47f4-b9ee-74be5c23502f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0abab60f5c601fd8191c1a2aa712d4ab55460e987c7d41ca7527c2934792cc0b [2022-12-14 08:08:06,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:08:06,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:08:06,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:08:06,740 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:08:06,741 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:08:06,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/heap-data/hash_fun.i [2022-12-14 08:08:09,300 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:08:09,480 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:08:09,481 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/sv-benchmarks/c/heap-data/hash_fun.i [2022-12-14 08:08:09,490 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/data/878eb6526/8df84e9bba3f413686c132deab924ffc/FLAG1f0d04b1b [2022-12-14 08:08:09,878 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/data/878eb6526/8df84e9bba3f413686c132deab924ffc [2022-12-14 08:08:09,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:08:09,881 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:08:09,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:08:09,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:08:09,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:08:09,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:08:09" (1/1) ... [2022-12-14 08:08:09,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ea83b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:09, skipping insertion in model container [2022-12-14 08:08:09,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:08:09" (1/1) ... [2022-12-14 08:08:09,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:08:09,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:08:10,124 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_a09b700a-07c0-47f4-b9ee-74be5c23502f/sv-benchmarks/c/heap-data/hash_fun.i[23732,23745] [2022-12-14 08:08:10,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:08:10,133 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:08:10,161 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_a09b700a-07c0-47f4-b9ee-74be5c23502f/sv-benchmarks/c/heap-data/hash_fun.i[23732,23745] [2022-12-14 08:08:10,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:08:10,187 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:08:10,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10 WrapperNode [2022-12-14 08:08:10,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:08:10,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:08:10,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:08:10,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:08:10,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,202 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,215 INFO L138 Inliner]: procedures = 125, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2022-12-14 08:08:10,215 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:08:10,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:08:10,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:08:10,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:08:10,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,234 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,236 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:08:10,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:08:10,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:08:10,242 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:08:10,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (1/1) ... [2022-12-14 08:08:10,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:08:10,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:10,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:08:10,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:08:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 08:08:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 08:08:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 08:08:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:08:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 08:08:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 08:08:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 08:08:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 08:08:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-14 08:08:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:08:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:08:10,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:08:10,410 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:08:10,412 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:08:10,555 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:08:10,614 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:08:10,614 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 08:08:10,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:08:10 BoogieIcfgContainer [2022-12-14 08:08:10,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:08:10,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:08:10,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:08:10,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:08:10,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:08:09" (1/3) ... [2022-12-14 08:08:10,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e9e936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:08:10, skipping insertion in model container [2022-12-14 08:08:10,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:08:10" (2/3) ... [2022-12-14 08:08:10,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e9e936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:08:10, skipping insertion in model container [2022-12-14 08:08:10,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:08:10" (3/3) ... [2022-12-14 08:08:10,623 INFO L112 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2022-12-14 08:08:10,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:08:10,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:08:10,672 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:08:10,677 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;@2b454b79, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:08:10,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:08:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:10,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 08:08:10,684 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:10,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 08:08:10,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:10,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1489123456, now seen corresponding path program 1 times [2022-12-14 08:08:10,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:10,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082028172] [2022-12-14 08:08:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:10,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:10,839 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 08:08:10,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:10,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082028172] [2022-12-14 08:08:10,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082028172] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:08:10,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:08:10,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 08:08:10,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135421843] [2022-12-14 08:08:10,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:08:10,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 08:08:10,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:10,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 08:08:10,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:08:10,877 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:10,903 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2022-12-14 08:08:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 08:08:10,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 08:08:10,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:10,912 INFO L225 Difference]: With dead ends: 19 [2022-12-14 08:08:10,913 INFO L226 Difference]: Without dead ends: 9 [2022-12-14 08:08:10,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 08:08:10,919 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:10,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:08:10,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-12-14 08:08:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-12-14 08:08:10,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-12-14 08:08:10,948 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-12-14 08:08:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:10,949 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-12-14 08:08:10,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-12-14 08:08:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:08:10,949 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:10,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:08:10,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:08:10,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:10,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:10,951 INFO L85 PathProgramCache]: Analyzing trace with hash 399260967, now seen corresponding path program 1 times [2022-12-14 08:08:10,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:10,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60700916] [2022-12-14 08:08:10,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:10,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:11,055 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 08:08:11,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:11,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60700916] [2022-12-14 08:08:11,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60700916] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:08:11,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:08:11,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:08:11,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036084364] [2022-12-14 08:08:11,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:08:11,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:08:11,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:11,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:08:11,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:08:11,059 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:11,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:11,099 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-12-14 08:08:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:08:11,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 08:08:11,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:11,101 INFO L225 Difference]: With dead ends: 19 [2022-12-14 08:08:11,101 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 08:08:11,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:08:11,103 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:11,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 08:08:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 08:08:11,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-12-14 08:08:11,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-12-14 08:08:11,106 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2022-12-14 08:08:11,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:11,106 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-12-14 08:08:11,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:11,106 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-12-14 08:08:11,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 08:08:11,107 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:11,107 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:08:11,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:08:11,107 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:11,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:11,108 INFO L85 PathProgramCache]: Analyzing trace with hash 659355785, now seen corresponding path program 1 times [2022-12-14 08:08:11,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:11,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226340144] [2022-12-14 08:08:11,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:11,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:11,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:11,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:11,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226340144] [2022-12-14 08:08:11,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226340144] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:08:11,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043772299] [2022-12-14 08:08:11,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:11,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:11,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:11,736 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:11,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 08:08:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:11,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 33 conjunts are in the unsatisfiable core [2022-12-14 08:08:11,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:08:11,852 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 08:08:12,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2022-12-14 08:08:12,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:12,170 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 9 treesize of output 11 [2022-12-14 08:08:12,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:12,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:12,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select 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 19 [2022-12-14 08:08:12,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:12,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:12,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:12,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 23 [2022-12-14 08:08:12,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:12,358 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:12,359 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 103 treesize of output 107 [2022-12-14 08:08:12,617 INFO L321 Elim1Store]: treesize reduction 42, result has 14.3 percent of original size [2022-12-14 08:08:12,618 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 133 treesize of output 107 [2022-12-14 08:08:12,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 99 [2022-12-14 08:08:12,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 83 [2022-12-14 08:08:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:12,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:08:13,044 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:13,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 08:08:13,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:13,065 INFO L321 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size [2022-12-14 08:08:13,065 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 2 case distinctions, treesize of input 10 treesize of output 11 [2022-12-14 08:08:13,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 08:08:13,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:13,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 10 treesize of output 14 [2022-12-14 08:08:13,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:13,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 10 treesize of output 14 [2022-12-14 08:08:13,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 5 [2022-12-14 08:08:13,163 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 08:08:13,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 08:08:13,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2022-12-14 08:08:13,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:13,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043772299] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:08:13,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [135484335] [2022-12-14 08:08:13,249 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 08:08:13,249 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:08:13,251 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:08:13,255 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:08:13,256 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:08:13,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,296 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 08:08:13,297 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 08:08:13,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,307 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 08:08:13,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2022-12-14 08:08:13,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,540 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-12-14 08:08:13,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,574 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-12-14 08:08:13,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 08:08:13,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-12-14 08:08:13,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select 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 08:08:13,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:13,807 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:13,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:13,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,818 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:13,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:13,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,832 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:13,843 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:13,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:13,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,853 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:13,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:13,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:13,877 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:13,877 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 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 08:08:13,885 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 08:08:13,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:13,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:14,005 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:14,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:14,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:14,015 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:14,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:14,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:14,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:14,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:14,041 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:14,041 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 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 08:08:14,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select 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 08:08:14,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:08:14,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:14,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:14,068 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:14,080 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:14,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:14,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:14,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:14,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:14,127 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:08:14,287 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '158#(and (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|) 0))) (= |ULTIMATE.start_main_~#list~0#1.offset| 0) (or (<= (+ |ULTIMATE.start_main_~base~0#1| 100) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|))) (< (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) |ULTIMATE.start_main_~base~0#1|)) (<= 0 |ULTIMATE.start_main_~#list~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~base~0#1| 2147483648)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~base~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:08:14,287 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:08:14,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:08:14,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 08:08:14,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522492472] [2022-12-14 08:08:14,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:08:14,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 08:08:14,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:14,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 08:08:14,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-12-14 08:08:14,290 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:14,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:14,420 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-12-14 08:08:14,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:08:14,420 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 08:08:14,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:14,421 INFO L225 Difference]: With dead ends: 19 [2022-12-14 08:08:14,421 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 08:08:14,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-12-14 08:08:14,423 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:14,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 35 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:08:14,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 08:08:14,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2022-12-14 08:08:14,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-12-14 08:08:14,427 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-12-14 08:08:14,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:14,427 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-12-14 08:08:14,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-12-14 08:08:14,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 08:08:14,428 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:14,428 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:08:14,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 08:08:14,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:14,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:14,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:14,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1502372715, now seen corresponding path program 2 times [2022-12-14 08:08:14,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:14,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392566406] [2022-12-14 08:08:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:14,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:15,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:15,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:15,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392566406] [2022-12-14 08:08:15,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392566406] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:08:15,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691218255] [2022-12-14 08:08:15,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:08:15,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:15,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:15,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:15,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 08:08:15,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 08:08:15,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:08:15,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-14 08:08:15,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:08:15,798 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 08:08:15,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2022-12-14 08:08:15,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:15,960 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 9 treesize of output 11 [2022-12-14 08:08:16,003 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 08:08:16,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:16,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:16,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2022-12-14 08:08:16,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:16,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:16,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:16,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2022-12-14 08:08:16,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:16,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:16,323 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 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 08:08:16,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2022-12-14 08:08:16,984 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:16,984 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 213 treesize of output 213 [2022-12-14 08:08:17,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:17,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:17,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 75 [2022-12-14 08:08:17,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:17,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 1 [2022-12-14 08:08:17,359 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-12-14 08:08:17,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 105 [2022-12-14 08:08:17,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-12-14 08:08:17,368 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 100 treesize of output 84 [2022-12-14 08:08:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:17,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:08:17,712 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:17,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 08:08:18,388 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:18,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 08:08:18,411 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-12-14 08:08:18,412 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 10 treesize of output 18 [2022-12-14 08:08:18,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 08:08:18,469 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:18,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 10 treesize of output 14 [2022-12-14 08:08:18,482 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:18,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 10 treesize of output 14 [2022-12-14 08:08:18,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:18,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 324 treesize of output 311 [2022-12-14 08:08:18,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2022-12-14 08:08:18,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 112 [2022-12-14 08:08:18,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 108 [2022-12-14 08:08:18,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 104 [2022-12-14 08:08:18,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-12-14 08:08:18,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 08:08:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:19,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691218255] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:08:19,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1056734639] [2022-12-14 08:08:19,006 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 08:08:19,006 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:08:19,006 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:08:19,006 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:08:19,007 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:08:19,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,025 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 08:08:19,025 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 08:08:19,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,039 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 08:08:19,039 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 08:08:19,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,197 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 08:08:19,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 08:08:19,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2022-12-14 08:08:19,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-12-14 08:08:19,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 08:08:19,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-12-14 08:08:19,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,465 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:19,474 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:19,474 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 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 08:08:19,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:19,495 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:19,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:19,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,505 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:19,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:19,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,516 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:19,527 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:19,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:19,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,537 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:19,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:19,544 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 08:08:19,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select 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 08:08:19,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select 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 08:08:19,676 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 08:08:19,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:19,697 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:19,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:19,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,707 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:19,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:19,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,719 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:19,731 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:19,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:19,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:19,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:19,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:19,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:19,770 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:19,770 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 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 08:08:19,794 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:08:19,959 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '292#(and (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|) 0))) (= |ULTIMATE.start_main_~#list~0#1.offset| 0) (or (<= (+ |ULTIMATE.start_main_~base~0#1| 100) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|))) (< (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) |ULTIMATE.start_main_~base~0#1|)) (<= 0 |ULTIMATE.start_main_~#list~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~base~0#1| 2147483648)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~base~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:08:19,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:08:19,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:08:19,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-12-14 08:08:19,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899037592] [2022-12-14 08:08:19,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:08:19,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 08:08:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:19,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 08:08:19,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-12-14 08:08:19,961 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:20,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:20,981 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-12-14 08:08:20,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 08:08:20,981 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 08:08:20,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:20,982 INFO L225 Difference]: With dead ends: 31 [2022-12-14 08:08:20,983 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 08:08:20,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=164, Invalid=591, Unknown=1, NotChecked=0, Total=756 [2022-12-14 08:08:20,983 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 26 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:20,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 38 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 3 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:08:20,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 08:08:20,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-12-14 08:08:20,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:20,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-12-14 08:08:20,988 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2022-12-14 08:08:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:20,988 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-12-14 08:08:20,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-12-14 08:08:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 08:08:20,989 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:20,989 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:08:20,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 08:08:21,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-12-14 08:08:21,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:21,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1455838765, now seen corresponding path program 1 times [2022-12-14 08:08:21,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:21,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212496503] [2022-12-14 08:08:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:21,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:21,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212496503] [2022-12-14 08:08:21,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212496503] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:08:21,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342338497] [2022-12-14 08:08:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:21,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:21,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:21,518 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:21,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 08:08:21,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:21,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-14 08:08:21,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:08:21,591 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 08:08:21,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:21,835 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 49 treesize of output 25 [2022-12-14 08:08:21,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:21,857 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 49 treesize of output 25 [2022-12-14 08:08:21,869 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:21,870 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 61 treesize of output 65 [2022-12-14 08:08:21,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:22,007 INFO L321 Elim1Store]: treesize reduction 99, result has 17.5 percent of original size [2022-12-14 08:08:22,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 89 treesize of output 70 [2022-12-14 08:08:22,012 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 08:08:22,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 46 [2022-12-14 08:08:22,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-12-14 08:08:22,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-12-14 08:08:22,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:22,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:08:22,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:22,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342338497] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:08:22,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [992188531] [2022-12-14 08:08:22,456 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 08:08:22,456 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:08:22,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:08:22,456 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:08:22,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:08:22,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,478 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 08:08:22,478 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 08:08:22,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,486 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 08:08:22,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 08:08:22,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2022-12-14 08:08:22,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,677 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-12-14 08:08:22,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,702 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-12-14 08:08:22,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2022-12-14 08:08:22,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,816 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:22,828 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:22,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:22,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,839 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:22,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:22,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 08:08:22,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,856 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:22,867 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:22,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:22,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,879 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:22,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:22,887 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 08:08:22,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:22,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:22,913 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:22,913 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 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 08:08:22,993 INFO L321 Elim1Store]: treesize reduction 42, result has 43.2 percent of original size [2022-12-14 08:08:22,993 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 100 treesize of output 100 [2022-12-14 08:08:23,014 INFO L321 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2022-12-14 08:08:23,014 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 104 treesize of output 90 [2022-12-14 08:08:23,032 INFO L321 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2022-12-14 08:08:23,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2022-12-14 08:08:23,154 INFO L321 Elim1Store]: treesize reduction 42, result has 43.2 percent of original size [2022-12-14 08:08:23,154 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 100 treesize of output 100 [2022-12-14 08:08:23,176 INFO L321 Elim1Store]: treesize reduction 24, result has 45.5 percent of original size [2022-12-14 08:08:23,176 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 98 treesize of output 88 [2022-12-14 08:08:23,200 INFO L321 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2022-12-14 08:08:23,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 24 [2022-12-14 08:08:23,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-12-14 08:08:23,306 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 08:08:23,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:23,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:23,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:23,328 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:23,328 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 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 08:08:23,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:23,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:23,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:23,350 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:23,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:23,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:23,362 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:23,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:23,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:23,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:23,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:23,385 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:23,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:23,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:23,397 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:23,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:23,427 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:08:23,673 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '480#(and (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|) 0))) (= |ULTIMATE.start_main_~#list~0#1.offset| 0) (or (<= (+ |ULTIMATE.start_main_~base~0#1| 100) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|))) (< (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) |ULTIMATE.start_main_~base~0#1|)) (<= 0 |ULTIMATE.start_main_~#list~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~base~0#1| 2147483648)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~base~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:08:23,673 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:08:23,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:08:23,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-12-14 08:08:23,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676840007] [2022-12-14 08:08:23,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:08:23,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 08:08:23,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:23,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 08:08:23,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-12-14 08:08:23,675 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:23,789 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-12-14 08:08:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:08:23,790 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 08:08:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:23,790 INFO L225 Difference]: With dead ends: 32 [2022-12-14 08:08:23,790 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 08:08:23,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-12-14 08:08:23,791 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:23,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 34 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:08:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 08:08:23,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-14 08:08:23,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:23,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-12-14 08:08:23,795 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2022-12-14 08:08:23,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:23,795 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-12-14 08:08:23,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:23,795 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-12-14 08:08:23,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 08:08:23,795 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:23,795 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2022-12-14 08:08:23,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 08:08:23,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:23,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:23,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash -695744593, now seen corresponding path program 3 times [2022-12-14 08:08:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:23,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715263678] [2022-12-14 08:08:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:23,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:28,296 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:28,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715263678] [2022-12-14 08:08:28,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715263678] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:08:28,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12925061] [2022-12-14 08:08:28,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 08:08:28,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:28,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:28,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:28,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:08:28,394 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 08:08:28,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:08:28,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 70 conjunts are in the unsatisfiable core [2022-12-14 08:08:28,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:08:28,410 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 08:08:28,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2022-12-14 08:08:28,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:28,589 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 9 treesize of output 11 [2022-12-14 08:08:28,597 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 08:08:28,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:28,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:28,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2022-12-14 08:08:28,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:28,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:28,744 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 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 08:08:28,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:28,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:28,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2022-12-14 08:08:28,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:29,376 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 08:08:29,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2022-12-14 08:08:29,479 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 08:08:29,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:29,537 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 9 treesize of output 11 [2022-12-14 08:08:29,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:29,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:29,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2022-12-14 08:08:29,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:29,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:29,734 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 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 08:08:29,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:29,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:29,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2022-12-14 08:08:29,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:29,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:29,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:30,009 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 08:08:30,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 37 [2022-12-14 08:08:30,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 08:08:30,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:30,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:30,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 40 [2022-12-14 08:08:30,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2022-12-14 08:08:30,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:30,333 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 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 08:08:30,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:30,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:30,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 40 [2022-12-14 08:08:30,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 26 [2022-12-14 08:08:31,811 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 08:08:31,859 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2022-12-14 08:08:32,032 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 08:08:32,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,108 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 9 treesize of output 11 [2022-12-14 08:08:32,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2022-12-14 08:08:32,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:32,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2022-12-14 08:08:32,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:32,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,336 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 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 08:08:32,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,535 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 08:08:32,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 48 [2022-12-14 08:08:32,553 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-12-14 08:08:32,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 47 [2022-12-14 08:08:32,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-12-14 08:08:32,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:32,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 39 [2022-12-14 08:08:32,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 27 [2022-12-14 08:08:33,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:33,066 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 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 08:08:33,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:33,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:33,341 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 08:08:33,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 37 [2022-12-14 08:08:33,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 08:08:33,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:33,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:33,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 44 [2022-12-14 08:08:33,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2022-12-14 08:08:33,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:33,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:33,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 19 [2022-12-14 08:08:33,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2022-12-14 08:08:34,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:34,097 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 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 08:08:34,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2022-12-14 08:08:35,173 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:35,174 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 254 treesize of output 254 [2022-12-14 08:08:35,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:35,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:35,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 75 [2022-12-14 08:08:35,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:35,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 1 [2022-12-14 08:08:35,614 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-12-14 08:08:35,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 105 [2022-12-14 08:08:35,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-12-14 08:08:35,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 84 [2022-12-14 08:08:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:08:35,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:08:35,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:35,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 08:08:36,525 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:36,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 08:08:37,780 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:37,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 08:08:39,117 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:39,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 08:08:39,134 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-12-14 08:08:39,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 10 treesize of output 18 [2022-12-14 08:08:39,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 08:08:39,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:39,180 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 10 treesize of output 14 [2022-12-14 08:08:39,190 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:39,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 10 treesize of output 14 [2022-12-14 08:08:39,289 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:39,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 435 treesize of output 422 [2022-12-14 08:08:39,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 213 [2022-12-14 08:08:39,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 213 treesize of output 209 [2022-12-14 08:08:39,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 205 [2022-12-14 08:08:39,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 205 treesize of output 203 [2022-12-14 08:08:39,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 203 treesize of output 199 [2022-12-14 08:08:39,356 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 197 [2022-12-14 08:08:39,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 193 [2022-12-14 08:08:39,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 189 [2022-12-14 08:08:39,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 08:08:39,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 08:08:39,664 WARN L207 Elim1Store]: Array PQE input equivalent to true [2022-12-14 08:08:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 4 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:08:39,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12925061] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:08:39,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1619080617] [2022-12-14 08:08:39,750 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-12-14 08:08:39,750 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 08:08:39,750 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 08:08:39,750 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 08:08:39,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 08:08:39,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:39,769 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 08:08:39,770 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 08:08:39,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:39,788 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 08:08:39,788 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 08:08:39,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:39,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:39,993 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-12-14 08:08:39,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-12-14 08:08:40,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 37 [2022-12-14 08:08:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-12-14 08:08:40,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-12-14 08:08:40,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-12-14 08:08:40,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:40,312 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:40,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:40,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,322 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:40,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:40,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select 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 08:08:40,336 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 08:08:40,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:40,357 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:40,358 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 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 08:08:40,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:40,377 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:40,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:40,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,387 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:40,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:40,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select 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 08:08:40,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,541 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:40,548 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:40,548 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 1 case distinctions, treesize of input 41 treesize of output 21 [2022-12-14 08:08:40,554 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 08:08:40,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:40,572 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:40,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:40,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,582 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:40,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:40,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:40,601 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-12-14 08:08:40,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2022-12-14 08:08:40,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:40,609 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:40,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 24 [2022-12-14 08:08:40,641 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 08:08:40,785 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '670#(and (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|) 0))) (= |ULTIMATE.start_main_~#list~0#1.offset| 0) (or (<= (+ |ULTIMATE.start_main_~base~0#1| 100) (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|))) (< (select (select |#memory_int| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_main_~#list~0#1.base|) |ULTIMATE.start_main_~#list~0#1.offset|)) |ULTIMATE.start_main_~base~0#1|)) (<= 0 |ULTIMATE.start_main_~#list~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~base~0#1| 2147483648)) (= |#NULL.offset| 0) (<= |ULTIMATE.start_main_~base~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 08:08:40,786 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 08:08:40,786 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 08:08:40,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2022-12-14 08:08:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5805282] [2022-12-14 08:08:40,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 08:08:40,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 08:08:40,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:08:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 08:08:40,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=438, Unknown=1, NotChecked=0, Total=552 [2022-12-14 08:08:40,788 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:08:42,473 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-12-14 08:08:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 08:08:42,473 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 08:08:42,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:08:42,474 INFO L225 Difference]: With dead ends: 30 [2022-12-14 08:08:42,474 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 08:08:42,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=222, Invalid=769, Unknown=1, NotChecked=0, Total=992 [2022-12-14 08:08:42,475 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 28 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:08:42,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 44 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:08:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 08:08:42,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 16. [2022-12-14 08:08:42,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-12-14 08:08:42,482 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 15 [2022-12-14 08:08:42,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:08:42,482 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-12-14 08:08:42,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:08:42,482 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-12-14 08:08:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 08:08:42,482 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:08:42,482 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 08:08:42,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:08:42,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:42,684 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:08:42,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:08:42,685 INFO L85 PathProgramCache]: Analyzing trace with hash 867270671, now seen corresponding path program 2 times [2022-12-14 08:08:42,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:08:42,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120278357] [2022-12-14 08:08:42,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:08:42,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:08:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:08:44,083 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:44,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:08:44,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120278357] [2022-12-14 08:08:44,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120278357] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 08:08:44,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659679543] [2022-12-14 08:08:44,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:08:44,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:08:44,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:08:44,085 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:08:44,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a09b700a-07c0-47f4-b9ee-74be5c23502f/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 08:08:44,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 08:08:44,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:08:44,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 69 conjunts are in the unsatisfiable core [2022-12-14 08:08:44,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:08:44,187 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 08:08:44,369 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 08:08:44,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2022-12-14 08:08:44,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:44,382 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 9 treesize of output 11 [2022-12-14 08:08:44,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:44,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:44,500 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-12-14 08:08:44,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:44,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:44,588 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 27 [2022-12-14 08:08:44,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:44,688 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 0 case distinctions, treesize of input 17 treesize of output 17 [2022-12-14 08:08:45,380 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:45,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 301 treesize of output 319 [2022-12-14 08:08:45,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:45,780 INFO L321 Elim1Store]: treesize reduction 145, result has 24.1 percent of original size [2022-12-14 08:08:45,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 300 treesize of output 248 [2022-12-14 08:08:45,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:45,814 INFO L321 Elim1Store]: treesize reduction 51, result has 25.0 percent of original size [2022-12-14 08:08:45,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 240 treesize of output 234 [2022-12-14 08:08:45,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 08:08:45,852 INFO L321 Elim1Store]: treesize reduction 156, result has 6.6 percent of original size [2022-12-14 08:08:45,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 309 treesize of output 229 [2022-12-14 08:08:46,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 08:08:46,792 INFO L321 Elim1Store]: treesize reduction 155, result has 19.7 percent of original size [2022-12-14 08:08:46,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 224 treesize of output 160 [2022-12-14 08:08:46,810 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-12-14 08:08:46,811 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 102 treesize of output 106 [2022-12-14 08:08:46,851 INFO L321 Elim1Store]: treesize reduction 168, result has 11.6 percent of original size [2022-12-14 08:08:46,851 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 140 [2022-12-14 08:08:47,225 INFO L321 Elim1Store]: treesize reduction 62, result has 10.1 percent of original size [2022-12-14 08:08:47,225 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 232 treesize of output 198 [2022-12-14 08:08:47,265 INFO L321 Elim1Store]: treesize reduction 48, result has 40.7 percent of original size [2022-12-14 08:08:47,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 206 treesize of output 193 [2022-12-14 08:08:47,314 INFO L321 Elim1Store]: treesize reduction 36, result has 47.8 percent of original size [2022-12-14 08:08:47,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 168 treesize of output 159 [2022-12-14 08:08:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:08:47,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:08:47,513 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse3 (+ (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|) 4))) (let ((.cse1 (select (select |c_#memory_$Pointer$.offset| .cse2) .cse3)) (.cse0 (select (select |c_#memory_$Pointer$.base| .cse2) .cse3))) (or (and (forall ((v_ArrVal_603 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_603) .cse0) .cse1) (+ |c_ULTIMATE.start_main_~base~0#1| 100))) (forall ((v_ArrVal_603 (Array Int Int))) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_603) .cse0) .cse1) 1)))) (and (= .cse1 0) (= .cse0 0)) (and (= |c_ULTIMATE.start_main_#t~mem16#1.offset| 0) (= |c_ULTIMATE.start_main_#t~mem16#1.base| 0))))) is different from false [2022-12-14 08:08:48,097 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset|)) (.cse22 (+ .cse2 4))) (let ((.cse10 (+ |c_ULTIMATE.start_main_~base~0#1| 100)) (.cse21 (select (select |c_#memory_$Pointer$.base| .cse4) .cse22)) (.cse20 (select (select |c_#memory_$Pointer$.offset| .cse4) .cse22))) (let ((.cse12 (and (forall ((v_ArrVal_603 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_603) .cse21) .cse20) .cse10)) (forall ((v_ArrVal_603 (Array Int Int))) (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_603) .cse21) .cse20) 1))))) (.cse13 (and (= .cse20 0) (= .cse21 0))) (.cse14 (and (= .cse2 0) (= .cse4 0))) (.cse19 (<= |c_ULTIMATE.start_main_~base~0#1| 1000000)) (.cse18 (<= 0 |c_ULTIMATE.start_main_~base~0#1|))) (and (or (and (forall ((v_ArrVal_595 Int)) (or (= v_ArrVal_595 0) (not (= (select |c_#valid| v_ArrVal_595) 0)) (not (< v_ArrVal_595 |c_#StackHeapBarrier|)) (forall ((v_ArrVal_588 Int) (v_ArrVal_598 Int) (v_ArrVal_603 (Array Int Int)) (v_ArrVal_593 (Array Int Int))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| v_ArrVal_595 (store (store (select |c_#memory_$Pointer$.base| v_ArrVal_595) 4 .cse4) 0 v_ArrVal_598)))) (store .cse3 |c_ULTIMATE.start_main_~#list~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset| v_ArrVal_595))) v_ArrVal_595) 4))) (or (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select (store (store |c_#memory_int| v_ArrVal_595 v_ArrVal_593) |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_603) .cse0) (select (select (let ((.cse1 (store |c_#memory_$Pointer$.offset| v_ArrVal_595 (store (store (select |c_#memory_$Pointer$.offset| v_ArrVal_595) 4 .cse2) 0 v_ArrVal_588)))) (store .cse1 |c_ULTIMATE.start_main_~#list~0#1.base| (store (select .cse1 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset| 0))) v_ArrVal_595) 4)) 1)) (= .cse0 0)))))) (forall ((v_ArrVal_595 Int)) (or (forall ((v_ArrVal_588 Int) (v_ArrVal_598 Int) (v_ArrVal_603 (Array Int Int)) (v_ArrVal_593 (Array Int Int))) (let ((.cse6 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.offset| v_ArrVal_595 (store (store (select |c_#memory_$Pointer$.offset| v_ArrVal_595) 4 .cse2) 0 v_ArrVal_588)))) (store .cse7 |c_ULTIMATE.start_main_~#list~0#1.base| (store (select .cse7 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset| 0))) v_ArrVal_595) 4))) (or (< |c_ULTIMATE.start_main_~base~0#1| (+ (select (select (store (store |c_#memory_int| v_ArrVal_595 v_ArrVal_593) |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_603) (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| v_ArrVal_595 (store (store (select |c_#memory_$Pointer$.base| v_ArrVal_595) 4 .cse4) 0 v_ArrVal_598)))) (store .cse5 |c_ULTIMATE.start_main_~#list~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset| v_ArrVal_595))) v_ArrVal_595) 4)) .cse6) 1)) (= 0 .cse6)))) (= v_ArrVal_595 0) (not (= (select |c_#valid| v_ArrVal_595) 0)) (not (< v_ArrVal_595 |c_#StackHeapBarrier|)))) (forall ((v_ArrVal_595 Int)) (or (= v_ArrVal_595 0) (not (= (select |c_#valid| v_ArrVal_595) 0)) (not (< v_ArrVal_595 |c_#StackHeapBarrier|)) (forall ((v_ArrVal_588 Int) (v_ArrVal_598 Int) (v_ArrVal_603 (Array Int Int)) (v_ArrVal_593 (Array Int Int))) (let ((.cse8 (select (select (let ((.cse11 (store |c_#memory_$Pointer$.base| v_ArrVal_595 (store (store (select |c_#memory_$Pointer$.base| v_ArrVal_595) 4 .cse4) 0 v_ArrVal_598)))) (store .cse11 |c_ULTIMATE.start_main_~#list~0#1.base| (store (select .cse11 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset| v_ArrVal_595))) v_ArrVal_595) 4))) (or (= .cse8 0) (< (select (select (store (store |c_#memory_int| v_ArrVal_595 v_ArrVal_593) |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_603) .cse8) (select (select (let ((.cse9 (store |c_#memory_$Pointer$.offset| v_ArrVal_595 (store (store (select |c_#memory_$Pointer$.offset| v_ArrVal_595) 4 .cse2) 0 v_ArrVal_588)))) (store .cse9 |c_ULTIMATE.start_main_~#list~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset| 0))) v_ArrVal_595) 4)) .cse10)))))) (or .cse12 .cse13 .cse14) (forall ((v_ArrVal_595 Int)) (or (forall ((v_ArrVal_588 Int) (v_ArrVal_598 Int) (v_ArrVal_603 (Array Int Int)) (v_ArrVal_593 (Array Int Int))) (let ((.cse15 (select (select (let ((.cse17 (store |c_#memory_$Pointer$.offset| v_ArrVal_595 (store (store (select |c_#memory_$Pointer$.offset| v_ArrVal_595) 4 .cse2) 0 v_ArrVal_588)))) (store .cse17 |c_ULTIMATE.start_main_~#list~0#1.base| (store (select .cse17 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset| 0))) v_ArrVal_595) 4))) (or (= 0 .cse15) (< (select (select (store (store |c_#memory_int| v_ArrVal_595 v_ArrVal_593) |c_ULTIMATE.start_main_~#list~0#1.base| v_ArrVal_603) (select (select (let ((.cse16 (store |c_#memory_$Pointer$.base| v_ArrVal_595 (store (store (select |c_#memory_$Pointer$.base| v_ArrVal_595) 4 .cse4) 0 v_ArrVal_598)))) (store .cse16 |c_ULTIMATE.start_main_~#list~0#1.base| (store (select .cse16 |c_ULTIMATE.start_main_~#list~0#1.base|) |c_ULTIMATE.start_main_~#list~0#1.offset| v_ArrVal_595))) v_ArrVal_595) 4)) .cse15) .cse10)))) (= v_ArrVal_595 0) (not (= (select |c_#valid| v_ArrVal_595) 0)) (not (< v_ArrVal_595 |c_#StackHeapBarrier|))))) (not .cse18) (not .cse19)) (or .cse12 .cse13 .cse14 (and .cse19 .cse18))))))) is different from false [2022-12-14 08:08:48,561 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:48,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2022-12-14 08:08:48,596 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-12-14 08:08:48,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 10 treesize of output 18 [2022-12-14 08:08:48,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-12-14 08:08:56,124 WARN L233 SmtUtils]: Spent 7.34s on a formula simplification that was a NOOP. DAG size: 182 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 08:08:56,125 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 08:08:56,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 3701 treesize of output 5102 [2022-12-14 08:08:56,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2874 treesize of output 2786 [2022-12-14 08:08:56,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2786 treesize of output 2698 [2022-12-14 08:08:56,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2698 treesize of output 2654 [2022-12-14 08:08:56,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2654 treesize of output 2478 [2022-12-14 08:08:56,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2478 treesize of output 2390 [2022-12-14 08:08:56,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2390 treesize of output 2346 [2022-12-14 08:08:57,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2346 treesize of output 2330 [2022-12-14 08:08:57,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2330 treesize of output 2314 [2022-12-14 08:08:57,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2314 treesize of output 2226 [2022-12-14 08:08:57,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2226 treesize of output 2182 [2022-12-14 08:08:57,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2182 treesize of output 2166 [2022-12-14 08:08:57,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2166 treesize of output 2150