./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/sina3.c --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_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/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_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/sina3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/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_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/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 2aebf3cfbf85ca5d76e40b9ce94a108ab82985532ad1ea09b88a009b3e11ff5a --- 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 13:09:55,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:09:55,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:09:55,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:09:55,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:09:55,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:09:55,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:09:55,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:09:55,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:09:55,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:09:55,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:09:55,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:09:55,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:09:55,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:09:55,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:09:55,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:09:55,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:09:55,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:09:55,466 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:09:55,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:09:55,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:09:55,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:09:55,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:09:55,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:09:55,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:09:55,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:09:55,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:09:55,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:09:55,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:09:55,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:09:55,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:09:55,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:09:55,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:09:55,481 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:09:55,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:09:55,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:09:55,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:09:55,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:09:55,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:09:55,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:09:55,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:09:55,485 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:09:55,507 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:09:55,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:09:55,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:09:55,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:09:55,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:09:55,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:09:55,509 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:09:55,509 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:09:55,509 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:09:55,509 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:09:55,509 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:09:55,510 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:09:55,510 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:09:55,510 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:09:55,510 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:09:55,510 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:09:55,511 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:09:55,511 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:09:55,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:09:55,512 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:09:55,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:09:55,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:09:55,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:09:55,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:09:55,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:09:55,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:09:55,513 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:09:55,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:09:55,514 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:09:55,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:09:55,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:09:55,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:09:55,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:09:55,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:09:55,515 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:09:55,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:09:55,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:09:55,515 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:09:55,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:09:55,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:09:55,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:09:55,516 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_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2aebf3cfbf85ca5d76e40b9ce94a108ab82985532ad1ea09b88a009b3e11ff5a [2022-12-14 13:09:55,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:09:55,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:09:55,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:09:55,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:09:55,757 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:09:55,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-fpi/sina3.c [2022-12-14 13:09:58,404 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:09:58,577 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:09:58,577 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/sv-benchmarks/c/array-fpi/sina3.c [2022-12-14 13:09:58,582 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/data/719fa1652/3b2ba74340aa4f7fa386b67d8b45677c/FLAG813adf58c [2022-12-14 13:09:58,594 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/data/719fa1652/3b2ba74340aa4f7fa386b67d8b45677c [2022-12-14 13:09:58,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:09:58,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:09:58,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:09:58,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:09:58,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:09:58,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f83b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58, skipping insertion in model container [2022-12-14 13:09:58,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:09:58,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:09:58,741 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_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/sv-benchmarks/c/array-fpi/sina3.c[588,601] [2022-12-14 13:09:58,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:09:58,769 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:09:58,781 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_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/sv-benchmarks/c/array-fpi/sina3.c[588,601] [2022-12-14 13:09:58,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:09:58,803 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:09:58,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58 WrapperNode [2022-12-14 13:09:58,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:09:58,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:09:58,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:09:58,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:09:58,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,837 INFO L138 Inliner]: procedures = 17, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 104 [2022-12-14 13:09:58,837 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:09:58,838 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:09:58,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:09:58,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:09:58,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:09:58,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:09:58,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:09:58,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:09:58,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (1/1) ... [2022-12-14 13:09:58,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:09:58,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:09:58,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:09:58,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:09:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:09:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:09:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:09:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 13:09:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 13:09:58,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:09:58,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:09:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 13:09:58,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:09:58,979 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:09:58,981 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:09:59,107 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:09:59,160 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:09:59,160 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-14 13:09:59,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:09:59 BoogieIcfgContainer [2022-12-14 13:09:59,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:09:59,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:09:59,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:09:59,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:09:59,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:09:58" (1/3) ... [2022-12-14 13:09:59,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a230d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:09:59, skipping insertion in model container [2022-12-14 13:09:59,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:09:58" (2/3) ... [2022-12-14 13:09:59,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a230d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:09:59, skipping insertion in model container [2022-12-14 13:09:59,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:09:59" (3/3) ... [2022-12-14 13:09:59,179 INFO L112 eAbstractionObserver]: Analyzing ICFG sina3.c [2022-12-14 13:09:59,198 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:09:59,198 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:09:59,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:09:59,250 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;@79f95716, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:09:59,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:09:59,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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 13:09:59,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 13:09:59,260 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:09:59,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:09:59,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:09:59,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:09:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash -155408202, now seen corresponding path program 1 times [2022-12-14 13:09:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:09:59,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167553955] [2022-12-14 13:09:59,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:09:59,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:09:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:09:59,523 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 13:09:59,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:09:59,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167553955] [2022-12-14 13:09:59,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167553955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:09:59,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:09:59,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:09:59,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708833568] [2022-12-14 13:09:59,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:09:59,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:09:59,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:09:59,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:09:59,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:09:59,564 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 12 states have internal predecessors, (19), 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 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 13:09:59,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:09:59,610 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2022-12-14 13:09:59,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:09:59,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 13:09:59,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:09:59,616 INFO L225 Difference]: With dead ends: 24 [2022-12-14 13:09:59,616 INFO L226 Difference]: Without dead ends: 12 [2022-12-14 13:09:59,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:09:59,620 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:09:59,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:09:59,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-12-14 13:09:59,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-12-14 13:09:59,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 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 13:09:59,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2022-12-14 13:09:59,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9 [2022-12-14 13:09:59,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:09:59,643 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 16 transitions. [2022-12-14 13:09:59,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 13:09:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions. [2022-12-14 13:09:59,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 13:09:59,644 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:09:59,644 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:09:59,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:09:59,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:09:59,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:09:59,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1655315069, now seen corresponding path program 1 times [2022-12-14 13:09:59,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:09:59,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683257046] [2022-12-14 13:09:59,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:09:59,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:09:59,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:09:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 13:09:59,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:09:59,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683257046] [2022-12-14 13:09:59,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683257046] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:09:59,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:09:59,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:09:59,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412707162] [2022-12-14 13:09:59,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:09:59,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 13:09:59,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:09:59,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 13:09:59,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:09:59,751 INFO L87 Difference]: Start difference. First operand 12 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 13:09:59,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:09:59,792 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2022-12-14 13:09:59,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 13:09:59,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) Word has length 10 [2022-12-14 13:09:59,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:09:59,793 INFO L225 Difference]: With dead ends: 27 [2022-12-14 13:09:59,793 INFO L226 Difference]: Without dead ends: 20 [2022-12-14 13:09:59,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 13:09:59,795 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:09:59,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 6 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:09:59,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-14 13:09:59,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-12-14 13:09:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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 13:09:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-12-14 13:09:59,800 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2022-12-14 13:09:59,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:09:59,801 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-12-14 13:09:59,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 13:09:59,801 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-12-14 13:09:59,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 13:09:59,801 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:09:59,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:09:59,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:09:59,802 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:09:59,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:09:59,802 INFO L85 PathProgramCache]: Analyzing trace with hash -165518152, now seen corresponding path program 1 times [2022-12-14 13:09:59,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:09:59,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913535861] [2022-12-14 13:09:59,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:09:59,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:09:59,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:10:00,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:10:00,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:10:00,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913535861] [2022-12-14 13:10:00,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913535861] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:10:00,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336348505] [2022-12-14 13:10:00,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:10:00,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:10:00,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:10:00,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:10:00,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 13:10:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:10:00,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-14 13:10:00,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:10:00,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:10:00,941 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:10:00,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-12-14 13:10:00,976 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 19 treesize of output 18 [2022-12-14 13:10:01,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-12-14 13:10:01,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2022-12-14 13:10:01,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2022-12-14 13:10:01,484 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 13:10:01,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 38 [2022-12-14 13:10:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:10:01,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:10:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:10:01,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336348505] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:10:01,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [29123192] [2022-12-14 13:10:01,883 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 13:10:01,883 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:10:01,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:10:01,892 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:10:01,892 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:10:01,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:01,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:01,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:01,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:01,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,027 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 13:10:02,027 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 13:10:02,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 13:10:02,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-12-14 13:10:02,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-12-14 13:10:02,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:02,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:02,332 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-12-14 13:10:02,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-12-14 13:10:02,448 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:10:02,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:10:02,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:10:02,520 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:02,538 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 13:10:02,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 13:10:02,601 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 13:10:02,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 13:10:02,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:02,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:02,671 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-12-14 13:10:02,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-12-14 13:10:02,744 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-12-14 13:10:02,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-12-14 13:10:02,765 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:10:03,144 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '241#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 13:10:03,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:10:03,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:10:03,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2022-12-14 13:10:03,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445039178] [2022-12-14 13:10:03,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:10:03,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-14 13:10:03,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:10:03,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-14 13:10:03,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 13:10:03,147 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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 13:10:04,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:10:04,278 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2022-12-14 13:10:04,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 13:10:04,278 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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 13:10:04,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:10:04,279 INFO L225 Difference]: With dead ends: 48 [2022-12-14 13:10:04,279 INFO L226 Difference]: Without dead ends: 46 [2022-12-14 13:10:04,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=321, Invalid=2031, Unknown=0, NotChecked=0, Total=2352 [2022-12-14 13:10:04,280 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 96 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:10:04,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 68 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 13:10:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-14 13:10:04,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 25. [2022-12-14 13:10:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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 13:10:04,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-12-14 13:10:04,287 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 13 [2022-12-14 13:10:04,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:10:04,287 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-12-14 13:10:04,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 states have internal predecessors, (31), 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 13:10:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-12-14 13:10:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 13:10:04,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:10:04,288 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:10:04,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 13:10:04,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:10:04,490 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:10:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:10:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1789139528, now seen corresponding path program 2 times [2022-12-14 13:10:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:10:04,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031817764] [2022-12-14 13:10:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:10:04,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:10:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:10:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:10:04,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:10:04,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031817764] [2022-12-14 13:10:04,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031817764] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:10:04,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534770874] [2022-12-14 13:10:04,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:10:04,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:10:04,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:10:04,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:10:04,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 13:10:04,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 13:10:04,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:10:04,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:10:04,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:10:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:10:04,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:10:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:10:04,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534770874] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:10:04,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [397412223] [2022-12-14 13:10:04,688 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 13:10:04,688 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:10:04,689 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:10:04,689 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:10:04,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:10:04,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,810 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 13:10:04,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 13:10:04,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-12-14 13:10:04,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 13:10:04,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:04,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 118 [2022-12-14 13:10:05,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:05,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:05,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:05,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:05,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:05,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:05,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:05,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:05,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:05,112 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-12-14 13:10:05,113 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 25 case distinctions, treesize of input 523 treesize of output 517 [2022-12-14 13:10:05,216 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:10:05,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:10:05,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:10:05,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:10:05,324 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 13:10:05,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 13:10:05,375 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 13:10:05,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 13:10:05,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:05,405 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:05,431 INFO L321 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2022-12-14 13:10:05,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2022-12-14 13:10:05,507 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-12-14 13:10:05,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-12-14 13:10:05,528 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:10:05,911 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '482#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 13:10:05,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:10:05,912 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:10:05,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-14 13:10:05,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054592192] [2022-12-14 13:10:05,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:10:05,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 13:10:05,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:10:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 13:10:05,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-12-14 13:10:05,913 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 13:10:05,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:10:05,984 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2022-12-14 13:10:05,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 13:10:05,985 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14 [2022-12-14 13:10:05,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:10:05,985 INFO L225 Difference]: With dead ends: 63 [2022-12-14 13:10:05,986 INFO L226 Difference]: Without dead ends: 37 [2022-12-14 13:10:05,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2022-12-14 13:10:05,987 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 28 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:10:05,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 21 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:10:05,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-14 13:10:05,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2022-12-14 13:10:05,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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 13:10:05,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-12-14 13:10:05,991 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 14 [2022-12-14 13:10:05,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:10:05,991 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-12-14 13:10:05,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 13:10:05,992 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-12-14 13:10:05,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 13:10:05,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:10:05,992 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:10:05,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 13:10:06,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:10:06,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:10:06,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:10:06,195 INFO L85 PathProgramCache]: Analyzing trace with hash -421291265, now seen corresponding path program 3 times [2022-12-14 13:10:06,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:10:06,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150092871] [2022-12-14 13:10:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:10:06,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:10:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:10:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:10:06,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:10:06,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150092871] [2022-12-14 13:10:06,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150092871] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:10:06,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271271405] [2022-12-14 13:10:06,285 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:10:06,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:10:06,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:10:06,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:10:06,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 13:10:06,344 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:10:06,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:10:06,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 13:10:06,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:10:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:10:06,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:10:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 13:10:06,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271271405] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:10:06,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [674007662] [2022-12-14 13:10:06,402 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 13:10:06,403 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:10:06,403 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:10:06,403 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:10:06,403 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:10:06,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,564 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-12-14 13:10:06,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-12-14 13:10:06,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,679 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 13:10:06,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 13:10:06,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 13:10:06,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-12-14 13:10:06,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,848 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:06,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:06,892 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-12-14 13:10:06,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-12-14 13:10:06,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:10:07,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:10:07,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:10:07,055 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 13:10:07,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 13:10:07,098 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 13:10:07,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 13:10:07,135 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:07,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:10:07,157 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-12-14 13:10:07,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-12-14 13:10:07,228 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-12-14 13:10:07,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-12-14 13:10:07,254 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:10:07,526 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '723#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 13:10:07,527 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:10:07,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:10:07,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2022-12-14 13:10:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347355445] [2022-12-14 13:10:07,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:10:07,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 13:10:07,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:10:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 13:10:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-12-14 13:10:07,528 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 13:10:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:10:07,617 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-12-14 13:10:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 13:10:07,618 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 14 [2022-12-14 13:10:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:10:07,618 INFO L225 Difference]: With dead ends: 37 [2022-12-14 13:10:07,618 INFO L226 Difference]: Without dead ends: 29 [2022-12-14 13:10:07,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-12-14 13:10:07,620 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:10:07,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 21 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:10:07,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-12-14 13:10:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2022-12-14 13:10:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 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 13:10:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-12-14 13:10:07,624 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 14 [2022-12-14 13:10:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:10:07,624 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-12-14 13:10:07,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 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 13:10:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-12-14 13:10:07,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 13:10:07,624 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:10:07,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:10:07,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-14 13:10:07,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:10:07,826 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:10:07,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:10:07,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1101372854, now seen corresponding path program 4 times [2022-12-14 13:10:07,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:10:07,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862946328] [2022-12-14 13:10:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:10:07,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:10:07,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:10:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:10:08,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:10:08,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862946328] [2022-12-14 13:10:08,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862946328] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:10:08,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814682010] [2022-12-14 13:10:08,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:10:08,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:10:08,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:10:08,953 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:10:08,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 13:10:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:10:09,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 68 conjunts are in the unsatisfiable core [2022-12-14 13:10:09,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:10:09,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:10:09,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-12-14 13:10:09,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 13:10:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 13:10:09,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,249 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-12-14 13:10:09,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-12-14 13:10:09,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-12-14 13:10:09,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 45 [2022-12-14 13:10:09,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 47 [2022-12-14 13:10:09,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,761 INFO L321 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2022-12-14 13:10:09,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 66 [2022-12-14 13:10:09,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:10:09,881 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 13:10:09,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 34 [2022-12-14 13:10:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:10:09,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:12:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:12:14,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814682010] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:12:14,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1342436582] [2022-12-14 13:12:14,796 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 13:12:14,796 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:12:14,796 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:12:14,796 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:12:14,796 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:12:14,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:14,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:14,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:14,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:14,942 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-12-14 13:12:14,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-12-14 13:12:14,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:14,979 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 13:12:14,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-12-14 13:12:14,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:14,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,119 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 13:12:15,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 13:12:15,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-12-14 13:12:15,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,261 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:15,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:15,303 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-12-14 13:12:15,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-12-14 13:12:15,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:12:15,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:12:15,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:12:15,432 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 13:12:15,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 13:12:15,472 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 13:12:15,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 13:12:15,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:15,503 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:15,523 INFO L321 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2022-12-14 13:12:15,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2022-12-14 13:12:15,590 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-12-14 13:12:15,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-12-14 13:12:15,615 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:12:16,145 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '964#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 13:12:16,145 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:12:16,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:12:16,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2022-12-14 13:12:16,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847968825] [2022-12-14 13:12:16,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:12:16,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-14 13:12:16,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:12:16,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-14 13:12:16,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2014, Unknown=46, NotChecked=0, Total=2256 [2022-12-14 13:12:16,147 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 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 13:12:20,773 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse10 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse17 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store .cse10 (+ .cse17 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse17 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (.cse7 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (select .cse10 .cse7)) (.cse9 (store (select .cse8 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (and (<= c_~N~0 2) (= .cse0 1) (<= (+ 2 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.base|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (+ .cse0 1)) (= 0 |c_ULTIMATE.start_main_~b~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (< 1 c_~N~0) (<= (+ |c_ULTIMATE.start_main_~b~0#1.base| 2) |c_ULTIMATE.start_main_~#sum~0#1.base|) (forall ((|v_ULTIMATE.start_main_~i~0#1_155| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_155|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_159| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_159|)) (forall ((v_ArrVal_225 Int) (v_ArrVal_232 Int)) (< (select (store (let ((.cse5 (store .cse8 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse9 (+ (* |v_ULTIMATE.start_main_~i~0#1_159| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_225)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse1 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4))))) (store (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse2 .cse3 .cse4))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_155|)) v_ArrVal_232) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ |c_ULTIMATE.start_main_~i~0#1| 4))))))) (= (select .cse10 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (not (= |c_ULTIMATE.start_main_~b~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (forall ((|v_ULTIMATE.start_main_~i~0#1_155| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_155|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_159| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_159|)) (forall ((v_ArrVal_225 Int) (v_ArrVal_232 Int)) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) (select (store (let ((.cse15 (store .cse8 |c_ULTIMATE.start_main_~b~0#1.base| (store .cse9 (+ (* |v_ULTIMATE.start_main_~i~0#1_159| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_225)))) (let ((.cse16 (select .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse14 (select (select .cse15 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse13 (select (select (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse11 (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse14))))) (store (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse12 .cse13 .cse14))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_155|)) v_ArrVal_232) |c_ULTIMATE.start_main_~a~0#1.offset|))))))))))) is different from false [2022-12-14 13:12:32,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:12:32,336 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2022-12-14 13:12:32,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 13:12:32,336 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 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 17 [2022-12-14 13:12:32,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:12:32,337 INFO L225 Difference]: With dead ends: 41 [2022-12-14 13:12:32,337 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 13:12:32,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 140.4s TimeCoverageRelationStatistics Valid=350, Invalid=3142, Unknown=52, NotChecked=116, Total=3660 [2022-12-14 13:12:32,339 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 13:12:32,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 104 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 419 Invalid, 1 Unknown, 24 Unchecked, 1.8s Time] [2022-12-14 13:12:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 13:12:32,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 31. [2022-12-14 13:12:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 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 13:12:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2022-12-14 13:12:32,347 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 17 [2022-12-14 13:12:32,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:12:32,347 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2022-12-14 13:12:32,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.069767441860465) internal successors, (46), 43 states have internal predecessors, (46), 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 13:12:32,347 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2022-12-14 13:12:32,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 13:12:32,348 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:32,348 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:32,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 13:12:32,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:12:32,549 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:32,551 INFO L85 PathProgramCache]: Analyzing trace with hash -108509294, now seen corresponding path program 5 times [2022-12-14 13:12:32,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:12:32,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796341164] [2022-12-14 13:12:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:32,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:12:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:32,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:12:32,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:12:32,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796341164] [2022-12-14 13:12:32,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796341164] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:12:32,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829806911] [2022-12-14 13:12:32,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:12:32,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:12:32,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:12:32,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:12:32,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 13:12:32,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 13:12:32,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:12:32,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 13:12:32,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:12:32,773 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:12:32,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:12:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:12:32,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829806911] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:12:32,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [81434676] [2022-12-14 13:12:32,817 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 13:12:32,817 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:12:32,817 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:12:32,817 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:12:32,818 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:12:32,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:32,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:32,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:32,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:32,984 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-12-14 13:12:32,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-12-14 13:12:33,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,023 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 13:12:33,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-12-14 13:12:33,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,163 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 13:12:33,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 13:12:33,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 118 [2022-12-14 13:12:33,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:33,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:33,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:33,365 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-12-14 13:12:33,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 25 case distinctions, treesize of input 523 treesize of output 517 [2022-12-14 13:12:33,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:12:33,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:12:33,521 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:12:33,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:12:33,569 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 13:12:33,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 13:12:33,613 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 13:12:33,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 13:12:33,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:33,642 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:33,663 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-12-14 13:12:33,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-12-14 13:12:33,743 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-12-14 13:12:33,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-12-14 13:12:33,768 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:12:34,225 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1234#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 13:12:34,225 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:12:34,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:12:34,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-12-14 13:12:34,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531919787] [2022-12-14 13:12:34,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:12:34,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 13:12:34,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:12:34,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 13:12:34,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-14 13:12:34,227 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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 13:12:34,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:12:34,353 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2022-12-14 13:12:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 13:12:34,353 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) Word has length 18 [2022-12-14 13:12:34,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:12:34,354 INFO L225 Difference]: With dead ends: 84 [2022-12-14 13:12:34,354 INFO L226 Difference]: Without dead ends: 64 [2022-12-14 13:12:34,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 16 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=320, Unknown=0, NotChecked=0, Total=420 [2022-12-14 13:12:34,355 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 60 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:12:34,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 36 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:12:34,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-14 13:12:34,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2022-12-14 13:12:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2272727272727273) internal successors, (54), 44 states have internal predecessors, (54), 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 13:12:34,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2022-12-14 13:12:34,366 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 18 [2022-12-14 13:12:34,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:12:34,366 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2022-12-14 13:12:34,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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 13:12:34,366 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2022-12-14 13:12:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 13:12:34,366 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:34,367 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:34,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 13:12:34,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-14 13:12:34,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:34,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash -423339907, now seen corresponding path program 6 times [2022-12-14 13:12:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:12:34,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497075586] [2022-12-14 13:12:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:34,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:12:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:12:34,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:12:34,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497075586] [2022-12-14 13:12:34,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497075586] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:12:34,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616892071] [2022-12-14 13:12:34,699 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 13:12:34,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:12:34,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:12:34,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:12:34,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 13:12:34,780 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 13:12:34,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:12:34,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 13:12:34,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:12:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:12:34,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:12:34,870 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:12:34,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616892071] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:12:34,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [210679641] [2022-12-14 13:12:34,872 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 13:12:34,872 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:12:34,873 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:12:34,873 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:12:34,873 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:12:34,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:34,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:34,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:34,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,041 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-12-14 13:12:35,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-12-14 13:12:35,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,151 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 13:12:35,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 13:12:35,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 32 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 108 [2022-12-14 13:12:35,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 118 [2022-12-14 13:12:35,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:35,349 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:35,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:35,384 INFO L321 Elim1Store]: treesize reduction 154, result has 18.5 percent of original size [2022-12-14 13:12:35,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 35 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 25 case distinctions, treesize of input 523 treesize of output 517 [2022-12-14 13:12:35,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:12:35,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:12:35,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:12:35,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:12:35,572 INFO L321 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2022-12-14 13:12:35,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-12-14 13:12:35,623 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 13:12:35,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 13:12:35,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:35,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:35,674 INFO L321 Elim1Store]: treesize reduction 28, result has 52.5 percent of original size [2022-12-14 13:12:35,674 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 40 [2022-12-14 13:12:35,747 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-12-14 13:12:35,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-12-14 13:12:35,766 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:12:36,146 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1575#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 13:12:36,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:12:36,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:12:36,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-12-14 13:12:36,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358443605] [2022-12-14 13:12:36,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:12:36,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 13:12:36,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:12:36,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 13:12:36,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-12-14 13:12:36,148 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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 13:12:36,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:12:36,333 INFO L93 Difference]: Finished difference Result 67 states and 74 transitions. [2022-12-14 13:12:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 13:12:36,333 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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) Word has length 18 [2022-12-14 13:12:36,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:12:36,333 INFO L225 Difference]: With dead ends: 67 [2022-12-14 13:12:36,334 INFO L226 Difference]: Without dead ends: 54 [2022-12-14 13:12:36,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-12-14 13:12:36,334 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 46 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 13:12:36,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 72 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 13:12:36,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-14 13:12:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2022-12-14 13:12:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 36 states have internal predecessors, (42), 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 13:12:36,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-12-14 13:12:36,342 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 18 [2022-12-14 13:12:36,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:12:36,342 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-12-14 13:12:36,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 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 13:12:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-12-14 13:12:36,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 13:12:36,342 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:36,342 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:36,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 13:12:36,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:12:36,543 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:36,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:36,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1748691183, now seen corresponding path program 1 times [2022-12-14 13:12:36,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:12:36,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923971417] [2022-12-14 13:12:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:36,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:12:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:12:37,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:12:37,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923971417] [2022-12-14 13:12:37,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923971417] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:12:37,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858467633] [2022-12-14 13:12:37,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:37,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:12:37,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:12:37,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:12:38,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 13:12:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:38,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 74 conjunts are in the unsatisfiable core [2022-12-14 13:12:38,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:12:38,082 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:12:38,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-12-14 13:12:38,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:12:38,099 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 19 treesize of output 18 [2022-12-14 13:12:38,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:38,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 36 [2022-12-14 13:12:38,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-12-14 13:12:38,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2022-12-14 13:12:38,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:38,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:38,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 50 [2022-12-14 13:12:38,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:38,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:12:38,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 47 [2022-12-14 13:12:38,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 44 [2022-12-14 13:12:38,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:12:38,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2022-12-14 13:12:38,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 32 [2022-12-14 13:12:38,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2022-12-14 13:12:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:12:38,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:12:39,045 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_420 (Array Int Int))) (= (select (store v_ArrVal_420 (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) 8 |c_ULTIMATE.start_main_~a~0#1.offset|) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (+ c_~N~0 1))) is different from false [2022-12-14 13:12:39,050 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_420 (Array Int Int))) (= (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ c_~N~0 1))) is different from false [2022-12-14 13:12:39,140 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_420 (Array Int Int))) (= (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse1 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse4 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ .cse2 .cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse4 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ c_~N~0 1))) is different from false [2022-12-14 13:12:39,261 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_420 (Array Int Int))) (= (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) 1)))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse3 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) .cse4)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ c_~N~0 1))) is different from false [2022-12-14 13:12:39,270 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 13:12:39,270 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 285 treesize of output 169 [2022-12-14 13:12:39,281 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_1 (Array Int Int)) (v_ArrVal_420 (Array Int Int))) (or (not (= (select v_arrayElimArr_1 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) 1)) (= (let ((.cse0 (store (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse3 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse3 .cse4 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select .cse0 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ c_~N~0 1)))) is different from false [2022-12-14 13:12:39,421 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse6 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1))) (.cse0 (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))) (and (forall ((v_arrayElimArr_1 (Array Int Int))) (or (not (= (select v_arrayElimArr_1 .cse0) 1)) (forall ((v_ArrVal_420 (Array Int Int))) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) (let ((.cse1 (store (let ((.cse2 (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse5 (select (select .cse2 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse4 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse5)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse1 |c_ULTIMATE.start_main_~b~0#1.base|) .cse0) (select (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (forall ((v_arrayElimArr_1 (Array Int Int))) (or (forall ((v_ArrVal_420 (Array Int Int))) (< (let ((.cse8 (store (let ((.cse9 (store .cse7 |c_ULTIMATE.start_main_~b~0#1.base| v_arrayElimArr_1))) (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse11 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse12 (select (select .cse9 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse11 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6) .cse12)))))) |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_420))) (+ (select (select .cse8 |c_ULTIMATE.start_main_~b~0#1.base|) .cse0) (select (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) (not (= (select v_arrayElimArr_1 .cse0) 1)))))) is different from false [2022-12-14 13:13:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2022-12-14 13:13:10,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858467633] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:13:10,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [541244870] [2022-12-14 13:13:10,945 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 13:13:10,945 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:13:10,945 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:13:10,945 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:13:10,945 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:13:10,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,370 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-12-14 13:13:11,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-12-14 13:13:11,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,462 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 13:13:11,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-12-14 13:13:11,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,818 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 13:13:11,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 13:13:11,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:11,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-12-14 13:13:11,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:13:12,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:13:12,130 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-12-14 13:13:12,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-12-14 13:13:12,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:13:12,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:13:12,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:13:12,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:13:12,413 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 13:13:12,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 13:13:12,543 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 13:13:12,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 13:13:12,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:13:12,593 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:13:12,687 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-12-14 13:13:12,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-12-14 13:13:12,876 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-12-14 13:13:12,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-12-14 13:13:13,005 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:13:15,354 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1921#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (<= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 13:13:15,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:13:15,354 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:13:15,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 44 [2022-12-14 13:13:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300868245] [2022-12-14 13:13:15,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:13:15,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-14 13:13:15,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:13:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-14 13:13:15,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1671, Unknown=54, NotChecked=534, Total=2450 [2022-12-14 13:13:15,357 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 44 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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 13:14:07,989 WARN L233 SmtUtils]: Spent 39.73s on a formula simplification. DAG size of input: 88 DAG size of output: 83 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:14:12,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 13:14:14,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 13:14:16,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 13:14:18,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-14 13:14:27,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:14:27,270 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2022-12-14 13:14:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 13:14:27,271 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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 20 [2022-12-14 13:14:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:14:27,272 INFO L225 Difference]: With dead ends: 40 [2022-12-14 13:14:27,272 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 13:14:27,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 27 SyntacticMatches, 7 SemanticMatches, 57 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 94.6s TimeCoverageRelationStatistics Valid=285, Invalid=2431, Unknown=64, NotChecked=642, Total=3422 [2022-12-14 13:14:27,274 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 10 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-12-14 13:14:27,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 55 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 358 Invalid, 7 Unknown, 169 Unchecked, 12.4s Time] [2022-12-14 13:14:27,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 13:14:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-12-14 13:14:27,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 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 13:14:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-12-14 13:14:27,281 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 20 [2022-12-14 13:14:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:14:27,281 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-12-14 13:14:27,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 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 13:14:27,281 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-12-14 13:14:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 13:14:27,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:14:27,282 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:14:27,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 13:14:27,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:14:27,483 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:14:27,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:14:27,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1643001400, now seen corresponding path program 7 times [2022-12-14 13:14:27,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:14:27,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331676143] [2022-12-14 13:14:27,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:14:27,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:14:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:14:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:14:30,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:14:30,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331676143] [2022-12-14 13:14:30,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331676143] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:14:30,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825693958] [2022-12-14 13:14:30,844 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 13:14:30,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:14:30,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:14:30,845 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:14:30,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 13:14:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:14:30,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 92 conjunts are in the unsatisfiable core [2022-12-14 13:14:30,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:14:30,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:14:30,950 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:14:30,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-12-14 13:14:30,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-12-14 13:14:31,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:31,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 33 [2022-12-14 13:14:31,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:31,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:31,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2022-12-14 13:14:31,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:31,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:31,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 52 [2022-12-14 13:14:31,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:31,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:31,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:31,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2022-12-14 13:14:32,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:32,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:32,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:32,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 66 [2022-12-14 13:14:32,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:32,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:32,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:32,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:14:32,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2022-12-14 13:14:32,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:14:32,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:32,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:32,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 67 [2022-12-14 13:14:33,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:33,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:33,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:33,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:14:33,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:33,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 61 [2022-12-14 13:14:33,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:33,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:33,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:33,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 64 [2022-12-14 13:14:34,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:34,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:34,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:34,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:34,205 INFO L321 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2022-12-14 13:14:34,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 79 treesize of output 88 [2022-12-14 13:14:34,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:14:35,428 INFO L321 Elim1Store]: treesize reduction 354, result has 25.3 percent of original size [2022-12-14 13:14:35,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 141 treesize of output 206 [2022-12-14 13:14:40,484 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 13:14:40,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 36 [2022-12-14 13:14:40,589 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:14:40,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:14:43,458 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_522 Int) (v_ArrVal_519 Int) (|v_ULTIMATE.start_main_~i~0#1_293| Int) (|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (= (select (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|)))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_294|)))) is different from false [2022-12-14 13:15:59,454 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_522 Int) (|v_ULTIMATE.start_main_~i~0#1_300| Int) (v_ArrVal_510 Int) (|v_ULTIMATE.start_main_~i~0#1_299| Int) (v_ArrVal_519 Int) (|v_ULTIMATE.start_main_~i~0#1_293| Int) (v_ArrVal_507 Int) (|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (= (select (store (store (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse2 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse3 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (let ((.cse0 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))))) (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse1 .cse2 .cse3 .cse4)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ c_~N~0 1)) (not (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) |v_ULTIMATE.start_main_~i~0#1_300|)))) is different from false [2022-12-14 13:16:06,629 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* 8 |c_ULTIMATE.start_main_~i~0#1|) |c_ULTIMATE.start_main_~a~0#1.offset|) 1)))) (let ((.cse7 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (+ |c_ULTIMATE.start_main_~i~0#1| 1) (select (store (store (let ((.cse5 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse4 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse3 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse0 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))))) (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse1 .cse2 .cse3 .cse4)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|)))))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (select (store (store (let ((.cse16 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select (select .cse16 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse15 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse13 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse14 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse11 (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse14 .cse15))))) (store (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse12 .cse13 .cse14 .cse15)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ 3 |c_ULTIMATE.start_main_~i~0#1|))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|)))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|))))))))) is different from false [2022-12-14 13:16:08,897 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse18 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse18 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))))) (let ((.cse7 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (select (store (store (let ((.cse5 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse0 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))))) (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse1 .cse2 (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse3 .cse4)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ |c_ULTIMATE.start_main_~i~0#1| 4))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|)))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) (select (store (store (let ((.cse16 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse14 (select (select .cse16 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse15 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse13 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse11 (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse14 .cse15))))) (store (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse12 .cse13 (select (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse14 .cse15)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|))) (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)))))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|))))))) is different from false [2022-12-14 13:16:11,286 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse18 (* 8 |c_ULTIMATE.start_main_~i~0#1|))) (store (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse18 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse18 8 |c_ULTIMATE.start_main_~a~0#1.offset|) 1) (+ .cse18 16 |c_ULTIMATE.start_main_~a~0#1.offset|) 1))))) (let ((.cse7 (+ 16 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse10 (store (select .cse9 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset| 1))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) (select (store (store (let ((.cse5 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse4 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse1 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse0 (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 .cse3 .cse4))))) (store (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse1 (select (select .cse0 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse2 .cse3 .cse4)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|)))))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_294| Int)) (or (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_294|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_293| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_294| 1) |v_ULTIMATE.start_main_~i~0#1_293|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_300| Int)) (or (forall ((|v_ULTIMATE.start_main_~i~0#1_299| Int)) (or (not (<= (+ |v_ULTIMATE.start_main_~i~0#1_300| 1) |v_ULTIMATE.start_main_~i~0#1_299|)) (forall ((v_ArrVal_522 Int) (v_ArrVal_510 Int) (v_ArrVal_519 Int) (v_ArrVal_507 Int)) (< (select (store (store (let ((.cse16 (store .cse9 |c_ULTIMATE.start_main_~b~0#1.base| (store (store .cse10 (+ (* |v_ULTIMATE.start_main_~i~0#1_300| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_507) (+ (* |v_ULTIMATE.start_main_~i~0#1_299| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_510)))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse13 (select .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse14 (select (select .cse16 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse15 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse8))) (let ((.cse12 (select (select (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse14 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse7))) (let ((.cse11 (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse17 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse14 .cse15))))) (store (select .cse11 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse12 (select (select .cse11 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) .cse13 .cse14 .cse15)))))))) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* 8 |v_ULTIMATE.start_main_~i~0#1_294|)) v_ArrVal_519) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_293|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_522) |c_ULTIMATE.start_main_~a~0#1.offset|) (+ 5 |c_ULTIMATE.start_main_~i~0#1|))))) (not (<= 1 |v_ULTIMATE.start_main_~i~0#1_300|))))))))))) is different from false [2022-12-14 13:16:11,503 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2022-12-14 13:16:11,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825693958] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:16:11,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [347868476] [2022-12-14 13:16:11,504 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 13:16:11,504 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:16:11,504 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:16:11,504 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:16:11,504 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:16:11,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:11,565 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 13:16:11,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-12-14 13:16:11,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:11,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:11,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:11,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:11,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:11,931 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 13:16:11,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 13:16:11,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:11,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:11,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:11,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 19 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 48 [2022-12-14 13:16:12,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-12-14 13:16:12,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:16:12,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:16:12,315 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-12-14 13:16:12,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-12-14 13:16:12,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:16:12,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:16:12,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:16:12,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:16:12,562 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 13:16:12,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 13:16:12,702 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 13:16:12,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 13:16:12,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:16:12,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:16:12,847 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-12-14 13:16:12,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-12-14 13:16:13,060 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-12-14 13:16:13,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-12-14 13:16:13,099 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:16:15,052 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2231#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 13:16:15,052 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:16:15,052 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:16:15,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 52 [2022-12-14 13:16:15,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459957086] [2022-12-14 13:16:15,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:16:15,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-12-14 13:16:15,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:16:15,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-12-14 13:16:15,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=2413, Unknown=27, NotChecked=520, Total=3192 [2022-12-14 13:16:15,054 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 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 13:16:27,450 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 162 DAG size of output: 98 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:16:56,443 WARN L233 SmtUtils]: Spent 26.52s on a formula simplification. DAG size of input: 120 DAG size of output: 119 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:17:22,597 WARN L233 SmtUtils]: Spent 15.52s on a formula simplification. DAG size of input: 142 DAG size of output: 132 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:17:58,127 WARN L233 SmtUtils]: Spent 32.61s on a formula simplification. DAG size of input: 75 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:18:00,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:02,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:04,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:06,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:08,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:10,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:12,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:14,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:16,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:18,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:20,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:22,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:24,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:26,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:28,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:30,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:32,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:34,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:36,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:18:38,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:19:18,905 WARN L233 SmtUtils]: Spent 26.42s on a formula simplification. DAG size of input: 89 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:19:20,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2022-12-14 13:19:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:19:21,266 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2022-12-14 13:19:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-14 13:19:21,266 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 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 21 [2022-12-14 13:19:21,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:19:21,266 INFO L225 Difference]: With dead ends: 49 [2022-12-14 13:19:21,267 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 13:19:21,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 68 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 236.6s TimeCoverageRelationStatistics Valid=400, Invalid=3750, Unknown=30, NotChecked=650, Total=4830 [2022-12-14 13:19:21,268 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 45 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 167 IncrementalHoareTripleChecker+Unchecked, 45.6s IncrementalHoareTripleChecker+Time [2022-12-14 13:19:21,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 71 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 632 Invalid, 21 Unknown, 167 Unchecked, 45.6s Time] [2022-12-14 13:19:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 13:19:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30. [2022-12-14 13:19:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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 13:19:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-12-14 13:19:21,280 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 21 [2022-12-14 13:19:21,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:19:21,280 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-12-14 13:19:21,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.0576923076923077) internal successors, (55), 52 states have internal predecessors, (55), 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 13:19:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-12-14 13:19:21,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-14 13:19:21,280 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:19:21,280 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:19:21,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 13:19:21,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 13:19:21,482 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:19:21,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:19:21,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1201976888, now seen corresponding path program 8 times [2022-12-14 13:19:21,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:19:21,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555966489] [2022-12-14 13:19:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:19:21,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:19:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:19:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:19:21,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:19:21,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555966489] [2022-12-14 13:19:21,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555966489] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:19:21,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763060873] [2022-12-14 13:19:21,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:19:21,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:19:21,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:19:21,747 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:19:21,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 13:19:21,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 13:19:21,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:19:21,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 13:19:21,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:19:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:19:22,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:19:22,713 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 13:19:22,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763060873] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:19:22,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1120283076] [2022-12-14 13:19:22,715 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-12-14 13:19:22,716 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 13:19:22,716 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 13:19:22,716 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 13:19:22,716 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 13:19:22,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:22,788 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 13:19:22,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 112 [2022-12-14 13:19:22,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:22,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:22,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:22,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,204 INFO L321 Elim1Store]: treesize reduction 142, result has 27.2 percent of original size [2022-12-14 13:19:23,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 76 [2022-12-14 13:19:23,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,564 INFO L321 Elim1Store]: treesize reduction 182, result has 22.6 percent of original size [2022-12-14 13:19:23,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 14 case distinctions, treesize of input 52 treesize of output 93 [2022-12-14 13:19:23,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 38 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 123 [2022-12-14 13:19:23,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:19:23,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:23,866 INFO L321 Elim1Store]: treesize reduction 166, result has 11.7 percent of original size [2022-12-14 13:19:23,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 43 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 24 case distinctions, treesize of input 528 treesize of output 516 [2022-12-14 13:19:23,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:19:24,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:19:24,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 13:19:24,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:19:24,105 INFO L321 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2022-12-14 13:19:24,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 34 [2022-12-14 13:19:24,255 INFO L321 Elim1Store]: treesize reduction 29, result has 60.8 percent of original size [2022-12-14 13:19:24,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 54 [2022-12-14 13:19:24,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:19:24,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:19:24,413 INFO L321 Elim1Store]: treesize reduction 33, result has 52.2 percent of original size [2022-12-14 13:19:24,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 50 [2022-12-14 13:19:24,626 INFO L321 Elim1Store]: treesize reduction 53, result has 55.5 percent of original size [2022-12-14 13:19:24,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 80 [2022-12-14 13:19:24,660 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 13:19:25,776 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2557#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ ~N~0 1) |ULTIMATE.start_main_#t~mem16#1|) 1 0)) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 8))) |ULTIMATE.start_main_#t~mem16#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (< |ULTIMATE.start_main_~i~0#1| ~N~0) (= |ULTIMATE.start_main_~b~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-12-14 13:19:25,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 13:19:25,776 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 13:19:25,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-12-14 13:19:25,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872521773] [2022-12-14 13:19:25,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 13:19:25,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 13:19:25,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:19:25,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 13:19:25,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2022-12-14 13:19:25,777 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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 13:19:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:19:27,830 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2022-12-14 13:19:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 13:19:27,831 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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 22 [2022-12-14 13:19:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:19:27,831 INFO L225 Difference]: With dead ends: 94 [2022-12-14 13:19:27,831 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 13:19:27,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 51 SyntacticMatches, 5 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=310, Invalid=1670, Unknown=0, NotChecked=0, Total=1980 [2022-12-14 13:19:27,832 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 174 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 13:19:27,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 168 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 13:19:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 13:19:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 47. [2022-12-14 13:19:27,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 46 states have internal predecessors, (53), 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 13:19:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2022-12-14 13:19:27,852 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 22 [2022-12-14 13:19:27,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:19:27,852 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2022-12-14 13:19:27,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 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 13:19:27,852 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2022-12-14 13:19:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 13:19:27,852 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:19:27,853 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:19:27,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 13:19:28,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 13:19:28,054 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:19:28,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:19:28,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1212573997, now seen corresponding path program 2 times [2022-12-14 13:19:28,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:19:28,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421409458] [2022-12-14 13:19:28,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:19:28,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:19:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:19:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:19:32,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:19:32,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421409458] [2022-12-14 13:19:32,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421409458] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 13:19:32,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982091958] [2022-12-14 13:19:32,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 13:19:32,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:19:32,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:19:32,503 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:19:32,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8de8ebcf-08c8-4af5-8a74-fefe2674cf03/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 13:19:32,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 13:19:32,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 13:19:32,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 76 conjunts are in the unsatisfiable core [2022-12-14 13:19:32,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:19:32,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:32,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:32,700 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-12-14 13:19:32,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2022-12-14 13:19:33,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-14 13:19:33,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:33,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-14 13:19:34,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:34,183 INFO L321 Elim1Store]: treesize reduction 30, result has 49.2 percent of original size [2022-12-14 13:19:34,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 46 [2022-12-14 13:19:34,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:34,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-14 13:19:34,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:34,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-12-14 13:19:34,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:34,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:34,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 13:19:34,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:34,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:34,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:34,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 39 [2022-12-14 13:19:35,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:35,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:35,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:35,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 51 [2022-12-14 13:19:35,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:35,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:35,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:35,639 INFO L321 Elim1Store]: treesize reduction 30, result has 49.2 percent of original size [2022-12-14 13:19:35,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 79 [2022-12-14 13:19:37,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:37,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:19:37,629 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-14 13:19:37,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 80 treesize of output 40 [2022-12-14 13:19:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:19:37,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:19:53,432 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 13:19:53,433 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 240 treesize of output 198 [2022-12-14 13:19:59,259 WARN L837 $PredicateComparison]: unable to prove that (or (not (< 1 c_~N~0)) (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_674 Int) (v_ArrVal_684 Int) (v_arrayElimArr_2 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_363| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse1 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (store (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_674)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_2))) (let ((.cse3 (store (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse5 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select v_arrayElimArr_2 |ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse3 .cse1 (let ((.cse4 (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse3))) (+ (select (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|)) (select (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|)))))) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_363|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_684)) (.cse2 (+ c_~N~0 1))) (or (= (select .cse0 .cse1) .cse2) (< (+ |ULTIMATE.start_main_~i~0#1| 1) c_~N~0) (< (+ |v_ULTIMATE.start_main_~i~0#1_363| 1) c_~N~0) (not (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse2))))))) is different from false [2022-12-14 13:19:59,332 WARN L837 $PredicateComparison]: unable to prove that (or (not (< 1 c_~N~0)) (forall ((v_ArrVal_674 Int) (v_ArrVal_684 Int) (v_arrayElimArr_2 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_363| Int) (|v_ULTIMATE.start_main_~i~0#1_370| Int) (|ULTIMATE.start_main_~#sum~0#1.offset| Int)) (let ((.cse2 (+ 8 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (store (let ((.cse5 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~b~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) 1) (+ (* |v_ULTIMATE.start_main_~i~0#1_370| 4) |c_ULTIMATE.start_main_~b~0#1.offset|) v_ArrVal_674)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_arrayElimArr_2))) (let ((.cse3 (store (select .cse5 |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset| (+ (select (select .cse5 |c_ULTIMATE.start_main_~b~0#1.base|) |c_ULTIMATE.start_main_~b~0#1.offset|) (select v_arrayElimArr_2 |ULTIMATE.start_main_~#sum~0#1.offset|))))) (store .cse3 .cse2 (let ((.cse4 (store .cse5 |c_ULTIMATE.start_main_~a~0#1.base| .cse3))) (+ (select (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) (select (select .cse4 |c_ULTIMATE.start_main_~b~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~b~0#1.offset|))))))) (+ (* 8 |v_ULTIMATE.start_main_~i~0#1_363|) |c_ULTIMATE.start_main_~a~0#1.offset|) v_ArrVal_684)) (.cse1 (+ c_~N~0 1))) (or (< (+ |v_ULTIMATE.start_main_~i~0#1_370| 1) c_~N~0) (not (= (select .cse0 |c_ULTIMATE.start_main_~a~0#1.offset|) .cse1)) (< (+ |v_ULTIMATE.start_main_~i~0#1_363| 1) c_~N~0) (= (select .cse0 .cse2) .cse1)))))) is different from false [2022-12-14 13:19:59,478 INFO L321 Elim1Store]: treesize reduction 43, result has 57.4 percent of original size [2022-12-14 13:19:59,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 636 treesize of output 261 [2022-12-14 13:19:59,529 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 13:19:59,530 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 3929 treesize of output 3645 [2022-12-14 13:19:59,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 13:19:59,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 4187 treesize of output 3697 [2022-12-14 13:20:01,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:20:01,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:20:01,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 66 [2022-12-14 13:20:01,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:20:01,427 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 13:20:01,428 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 127 treesize of output 131 [2022-12-14 13:20:01,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:20:01,691 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:20:01,720 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-14 13:20:01,720 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 210 treesize of output 1 [2022-12-14 13:20:01,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:20:01,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 82 [2022-12-14 13:20:01,779 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:20:01,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 79 [2022-12-14 13:20:01,822 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:20:01,853 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-14 13:20:01,853 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 284 treesize of output 1 [2022-12-14 13:20:17,525 WARN L233 SmtUtils]: Spent 11.06s on a formula simplification that was a NOOP. DAG size: 509 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-14 13:20:17,526 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 13:20:17,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 3487 treesize of output 4101