./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-tiling/tcpy.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/tcpy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur --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 a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 --- 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-38b53e6 [2022-11-26 00:18:49,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:18:49,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:18:49,533 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:18:49,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:18:49,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:18:49,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:18:49,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:18:49,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:18:49,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:18:49,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:18:49,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:18:49,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:18:49,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:18:49,560 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:18:49,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:18:49,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:18:49,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:18:49,569 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:18:49,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:18:49,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:18:49,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:18:49,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:18:49,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:18:49,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:18:49,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:18:49,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:18:49,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:18:49,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:18:49,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:18:49,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:18:49,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:18:49,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:18:49,602 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:18:49,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:18:49,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:18:49,604 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:18:49,604 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:18:49,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:18:49,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:18:49,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:18:49,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:18:49,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:18:49,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:18:49,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:18:49,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:18:49,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:18:49,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:18:49,657 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:18:49,657 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:18:49,657 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:18:49,657 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:18:49,658 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:18:49,659 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:18:49,659 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:18:49,659 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:18:49,659 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:18:49,660 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:18:49,660 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:18:49,660 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:18:49,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:18:49,661 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:18:49,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:18:49,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:18:49,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:18:49,662 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:18:49,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:18:49,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:18:49,663 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:18:49,663 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:18:49,663 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:18:49,664 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:18:49,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:18:49,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:18:49,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:18:49,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:18:49,665 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:18:49,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:18:49,665 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:18:49,666 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:18:49,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:18:49,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:18:49,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:18:49,666 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_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 [2022-11-26 00:18:49,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:18:50,021 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:18:50,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:18:50,026 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:18:50,026 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:18:50,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/array-tiling/tcpy.c [2022-11-26 00:18:53,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:18:53,282 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:18:53,282 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/sv-benchmarks/c/array-tiling/tcpy.c [2022-11-26 00:18:53,290 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/data/9b761ef45/245effe82072424fb5a6bbd620ab21cc/FLAG67fd2a62c [2022-11-26 00:18:53,309 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/data/9b761ef45/245effe82072424fb5a6bbd620ab21cc [2022-11-26 00:18:53,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:18:53,314 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:18:53,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:18:53,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:18:53,322 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:18:53,323 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a7132c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53, skipping insertion in model container [2022-11-26 00:18:53,325 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,333 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:18:53,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:18:53,531 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_daa2d840-a1c8-4505-816b-ef958f17a25f/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-11-26 00:18:53,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:18:53,578 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:18:53,592 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_daa2d840-a1c8-4505-816b-ef958f17a25f/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-11-26 00:18:53,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:18:53,615 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:18:53,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53 WrapperNode [2022-11-26 00:18:53,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:18:53,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:18:53,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:18:53,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:18:53,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,685 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-11-26 00:18:53,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:18:53,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:18:53,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:18:53,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:18:53,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,737 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,744 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:18:53,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:18:53,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:18:53,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:18:53,749 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (1/1) ... [2022-11-26 00:18:53,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:18:53,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:18:53,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:18:53,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:18:53,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:18:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:18:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:18:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:18:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:18:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:18:53,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:18:53,937 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:18:53,939 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:18:54,217 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:18:54,251 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:18:54,251 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-26 00:18:54,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:18:54 BoogieIcfgContainer [2022-11-26 00:18:54,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:18:54,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:18:54,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:18:54,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:18:54,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:18:53" (1/3) ... [2022-11-26 00:18:54,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579abc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:18:54, skipping insertion in model container [2022-11-26 00:18:54,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:53" (2/3) ... [2022-11-26 00:18:54,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@579abc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:18:54, skipping insertion in model container [2022-11-26 00:18:54,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:18:54" (3/3) ... [2022-11-26 00:18:54,263 INFO L112 eAbstractionObserver]: Analyzing ICFG tcpy.c [2022-11-26 00:18:54,283 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:18:54,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:18:54,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:18:54,359 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;@1f673cf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:18:54,361 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:18:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:18:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-26 00:18:54,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:18:54,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:18:54,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:18:54,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:18:54,382 INFO L85 PathProgramCache]: Analyzing trace with hash -680536009, now seen corresponding path program 1 times [2022-11-26 00:18:54,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:18:54,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451368245] [2022-11-26 00:18:54,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:18:54,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:18:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:18:54,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:18:54,751 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:18:54,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451368245] [2022-11-26 00:18:54,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451368245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:18:54,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:18:54,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:18:54,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497378286] [2022-11-26 00:18:54,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:18:54,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:18:54,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:18:54,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:18:54,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:18:54,827 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-26 00:18:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:18:54,923 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2022-11-26 00:18:54,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:18:54,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2022-11-26 00:18:54,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:18:54,936 INFO L225 Difference]: With dead ends: 24 [2022-11-26 00:18:54,937 INFO L226 Difference]: Without dead ends: 11 [2022-11-26 00:18:54,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:18:54,949 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:18:54,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:18:54,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-26 00:18:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-26 00:18:54,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 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) [2022-11-26 00:18:54,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-26 00:18:54,988 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2022-11-26 00:18:54,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:18:54,989 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-26 00:18:54,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-11-26 00:18:54,990 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-26 00:18:54,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:18:54,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:18:54,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:18:54,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:18:54,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:18:54,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:18:54,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1007490258, now seen corresponding path program 1 times [2022-11-26 00:18:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:18:54,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496752668] [2022-11-26 00:18:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:18:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:18:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:18:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:18:55,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:18:55,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496752668] [2022-11-26 00:18:55,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496752668] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:18:55,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114185383] [2022-11-26 00:18:55,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:18:55,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:18:55,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:18:55,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:18:55,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:18:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:18:55,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:18:55,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:18:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:18:55,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:18:55,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:18:55,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114185383] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:18:55,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1737531292] [2022-11-26 00:18:55,484 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:18:55,485 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:18:55,488 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:18:55,494 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:18:55,495 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:18:55,938 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-26 00:18:55,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-26 00:18:56,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-26 00:18:56,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 103 [2022-11-26 00:18:56,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:56,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:56,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:56,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:56,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:56,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:56,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:56,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:56,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:56,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:56,510 INFO L321 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-11-26 00:18:56,511 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 12 case distinctions, treesize of input 436 treesize of output 417 [2022-11-26 00:18:56,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-26 00:18:56,736 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:18:56,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1737531292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:18:56,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:18:56,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 11 [2022-11-26 00:18:56,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521778428] [2022-11-26 00:18:56,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:18:56,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:18:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:18:56,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:18:56,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:18:56,954 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2022-11-26 00:18:57,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:18:57,206 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2022-11-26 00:18:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:18:57,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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 [2022-11-26 00:18:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:18:57,208 INFO L225 Difference]: With dead ends: 17 [2022-11-26 00:18:57,208 INFO L226 Difference]: Without dead ends: 12 [2022-11-26 00:18:57,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:18:57,212 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:18:57,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:18:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-26 00:18:57,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-26 00:18:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-11-26 00:18:57,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-26 00:18:57,228 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-11-26 00:18:57,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:18:57,228 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-26 00:18:57,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2022-11-26 00:18:57,229 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-26 00:18:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:18:57,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:18:57,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:18:57,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:18:57,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:18:57,442 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:18:57,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:18:57,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1160125243, now seen corresponding path program 1 times [2022-11-26 00:18:57,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:18:57,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626405274] [2022-11-26 00:18:57,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:18:57,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:18:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:18:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:18:57,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:18:57,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626405274] [2022-11-26 00:18:57,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626405274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:18:57,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319523199] [2022-11-26 00:18:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:18:57,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:18:57,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:18:57,555 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:18:57,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:18:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:18:57,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:18:57,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:18:57,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:18:57,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:18:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:18:57,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319523199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:18:57,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1926419932] [2022-11-26 00:18:57,719 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:18:57,719 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:18:57,719 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:18:57,719 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:18:57,720 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:18:57,876 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-26 00:18:57,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 64 [2022-11-26 00:18:58,033 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-26 00:18:58,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-26 00:18:58,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-26 00:18:58,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:18:58,368 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-11-26 00:18:58,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 426 treesize of output 418 [2022-11-26 00:18:58,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-26 00:18:58,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,670 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:18:58,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:18:58,696 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-26 00:18:58,701 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 3 case distinctions, treesize of input 46 treesize of output 53 [2022-11-26 00:18:58,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:18:58,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:18:58,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,773 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:18:58,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:18:58,803 INFO L321 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2022-11-26 00:18:58,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 318 treesize of output 336 [2022-11-26 00:18:58,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,899 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:18:58,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:18:58,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:18:58,931 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-26 00:18:58,933 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 3 case distinctions, treesize of input 46 treesize of output 53 [2022-11-26 00:18:59,024 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:18:59,668 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '228#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~acopy~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~acopy~0#1.offset|))) (= |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| 4))) |ULTIMATE.start_main_#t~mem14#1|) (<= ~SIZE~0 100000) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~acopy~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem14#1| |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-26 00:18:59,668 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:18:59,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:18:59,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-26 00:18:59,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584559841] [2022-11-26 00:18:59,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:18:59,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:18:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:18:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:18:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:18:59,670 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:18:59,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:18:59,707 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2022-11-26 00:18:59,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:18:59,708 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:18:59,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:18:59,708 INFO L225 Difference]: With dead ends: 21 [2022-11-26 00:18:59,708 INFO L226 Difference]: Without dead ends: 13 [2022-11-26 00:18:59,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-26 00:18:59,710 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:18:59,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:18:59,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-26 00:18:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-26 00:18:59,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:18:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-26 00:18:59,715 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-11-26 00:18:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:18:59,716 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-26 00:18:59,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:18:59,716 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-26 00:18:59,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:18:59,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:18:59,717 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:18:59,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:18:59,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:18:59,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:18:59,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:18:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash -144270058, now seen corresponding path program 2 times [2022-11-26 00:18:59,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:18:59,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089890405] [2022-11-26 00:18:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:18:59,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:18:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:19:00,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:00,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089890405] [2022-11-26 00:19:00,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089890405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:19:00,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570790419] [2022-11-26 00:19:00,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:19:00,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:19:00,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:19:00,567 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:19:00,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:19:00,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-26 00:19:00,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:19:00,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-26 00:19:00,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:19:00,654 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 10 treesize of output 8 [2022-11-26 00:19:00,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:00,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:00,763 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 27 [2022-11-26 00:19:00,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:19:00,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:19:00,854 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:19:00,855 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 478 treesize of output 454 [2022-11-26 00:19:00,865 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 222 treesize of output 186 [2022-11-26 00:19:03,851 INFO L321 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-11-26 00:19:03,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 432 treesize of output 387 [2022-11-26 00:19:03,937 INFO L321 Elim1Store]: treesize reduction 27, result has 12.9 percent of original size [2022-11-26 00:19:03,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 365 treesize of output 331 [2022-11-26 00:19:03,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:03,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,034 INFO L321 Elim1Store]: treesize reduction 15, result has 51.6 percent of original size [2022-11-26 00:19:04,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 353 treesize of output 338 [2022-11-26 00:19:04,102 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:04,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 420 treesize of output 376 [2022-11-26 00:19:04,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,188 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 270 treesize of output 262 [2022-11-26 00:19:04,210 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 121 treesize of output 117 [2022-11-26 00:19:04,246 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:04,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 1 [2022-11-26 00:19:04,266 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:04,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 271 treesize of output 231 [2022-11-26 00:19:04,308 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:04,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,363 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:04,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:04,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:04,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,423 INFO L321 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2022-11-26 00:19:04,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 298 [2022-11-26 00:19:04,537 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:04,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 353 treesize of output 1 [2022-11-26 00:19:04,565 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:04,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 1 [2022-11-26 00:19:04,592 INFO L321 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2022-11-26 00:19:04,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 275 treesize of output 242 [2022-11-26 00:19:04,655 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:04,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 353 treesize of output 1 [2022-11-26 00:19:04,700 INFO L321 Elim1Store]: treesize reduction 5, result has 83.9 percent of original size [2022-11-26 00:19:04,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 87 [2022-11-26 00:19:04,741 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:04,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 151 treesize of output 1 [2022-11-26 00:19:04,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,770 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 270 treesize of output 262 [2022-11-26 00:19:04,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,825 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:04,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 1 [2022-11-26 00:19:04,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,852 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-26 00:19:04,853 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 259 treesize of output 1 [2022-11-26 00:19:04,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:04,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 192 treesize of output 174 [2022-11-26 00:19:04,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,967 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:04,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:04,979 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:04,985 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:04,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 342 treesize of output 1 [2022-11-26 00:19:04,996 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,002 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 275 treesize of output 1 [2022-11-26 00:19:05,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,040 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 1 [2022-11-26 00:19:05,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 146 [2022-11-26 00:19:05,101 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,107 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 1 [2022-11-26 00:19:05,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,121 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,126 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,140 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:19:05,172 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:05,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 1 [2022-11-26 00:19:05,187 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:05,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 222 treesize of output 1 [2022-11-26 00:19:05,206 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,212 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 300 treesize of output 1 [2022-11-26 00:19:05,232 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:05,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 233 treesize of output 1 [2022-11-26 00:19:05,256 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:05,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 300 treesize of output 1 [2022-11-26 00:19:05,278 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-26 00:19:05,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 323 treesize of output 302 [2022-11-26 00:19:05,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,371 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,386 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,391 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 1 [2022-11-26 00:19:05,417 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:05,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 420 treesize of output 1 [2022-11-26 00:19:05,433 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-26 00:19:05,433 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 443 treesize of output 1 [2022-11-26 00:19:05,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,476 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 1 [2022-11-26 00:19:05,496 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:05,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 204 treesize of output 1 [2022-11-26 00:19:05,516 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:05,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 222 treesize of output 1 [2022-11-26 00:19:05,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,535 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-26 00:19:05,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 31 [2022-11-26 00:19:05,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 1 [2022-11-26 00:19:05,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,577 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 1 [2022-11-26 00:19:05,591 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,597 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 342 treesize of output 1 [2022-11-26 00:19:05,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,617 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 1 [2022-11-26 00:19:05,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,646 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 275 treesize of output 1 [2022-11-26 00:19:05,658 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,664 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 1 [2022-11-26 00:19:05,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,681 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 222 treesize of output 1 [2022-11-26 00:19:05,696 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,702 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,703 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 204 treesize of output 1 [2022-11-26 00:19:05,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,722 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 1 [2022-11-26 00:19:05,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,739 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 204 treesize of output 1 [2022-11-26 00:19:05,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,756 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 275 treesize of output 1 [2022-11-26 00:19:05,776 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:05,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 342 treesize of output 1 [2022-11-26 00:19:05,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,818 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:05,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 271 treesize of output 1 [2022-11-26 00:19:05,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,838 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 151 treesize of output 1 [2022-11-26 00:19:05,889 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:05,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 271 treesize of output 1 [2022-11-26 00:19:05,903 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,908 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-26 00:19:05,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 151 treesize of output 1 [2022-11-26 00:19:05,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:05,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:05,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,008 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-26 00:19:06,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 420 treesize of output 1 [2022-11-26 00:19:06,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 467 treesize of output 455 [2022-11-26 00:19:06,066 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,067 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 84 treesize of output 70 [2022-11-26 00:19:06,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,122 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,136 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,239 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,254 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,259 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,267 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,271 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,325 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,361 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,399 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:06,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:06,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2022-11-26 00:19:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-26 00:19:06,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570790419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:19:06,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [60576640] [2022-11-26 00:19:06,716 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-26 00:19:06,717 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:19:06,717 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:19:06,717 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:19:06,718 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:19:06,862 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-26 00:19:06,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 44 treesize of output 77 [2022-11-26 00:19:06,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 43 [2022-11-26 00:19:06,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 26 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 98 [2022-11-26 00:19:07,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,079 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:07,127 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-11-26 00:19:07,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 26 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 13 case distinctions, treesize of input 426 treesize of output 418 [2022-11-26 00:19:07,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select 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 [2022-11-26 00:19:07,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,317 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:07,334 INFO L321 Elim1Store]: treesize reduction 37, result has 35.1 percent of original size [2022-11-26 00:19:07,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 39 [2022-11-26 00:19:07,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,380 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:07,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,384 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:07,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:07,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,396 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:07,518 INFO L321 Elim1Store]: treesize reduction 200, result has 34.0 percent of original size [2022-11-26 00:19:07,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 5 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 336 treesize of output 392 [2022-11-26 00:19:07,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,640 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:07,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:19:07,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:07,663 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-26 00:19:07,664 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 3 case distinctions, treesize of input 46 treesize of output 53 [2022-11-26 00:19:07,682 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:19:08,171 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '358#(and (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= |ULTIMATE.start_main_~i~0#1| 0) (= ~MAX~0 100000) (= |ULTIMATE.start_main_#t~mem13#1| (select (select |#memory_int| |ULTIMATE.start_main_~acopy~0#1.base|) (+ (* |ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~acopy~0#1.offset|))) (= |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| 4))) |ULTIMATE.start_main_#t~mem14#1|) (<= ~SIZE~0 100000) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start_main_~acopy~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_#t~mem14#1| |ULTIMATE.start_main_#t~mem13#1|) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (< |ULTIMATE.start_main_~i~0#1| ~SIZE~0) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= 0 |#StackHeapBarrier|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2022-11-26 00:19:08,171 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-26 00:19:08,172 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:19:08,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-26 00:19:08,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792701780] [2022-11-26 00:19:08,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:19:08,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-26 00:19:08,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:19:08,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-26 00:19:08,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-26 00:19:08,174 INFO L87 Difference]: Start difference. First operand 13 states and 15 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) [2022-11-26 00:19:08,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:19:08,395 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-26 00:19:08,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-26 00:19:08,398 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 11 [2022-11-26 00:19:08,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:19:08,398 INFO L225 Difference]: With dead ends: 19 [2022-11-26 00:19:08,398 INFO L226 Difference]: Without dead ends: 17 [2022-11-26 00:19:08,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2022-11-26 00:19:08,400 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 33 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:19:08,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 18 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:19:08,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-26 00:19:08,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-26 00:19:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:19:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-26 00:19:08,407 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-11-26 00:19:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:19:08,407 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-26 00:19:08,408 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) [2022-11-26 00:19:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-26 00:19:08,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:19:08,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:08,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:19:08,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-26 00:19:08,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:19:08,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:19:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:08,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1318200786, now seen corresponding path program 1 times [2022-11-26 00:19:08,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:08,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342507068] [2022-11-26 00:19:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:08,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:19:09,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:09,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342507068] [2022-11-26 00:19:09,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342507068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:19:09,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533505979] [2022-11-26 00:19:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:09,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:19:09,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:19:09,576 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:19:09,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa2d840-a1c8-4505-816b-ef958f17a25f/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:19:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:09,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-26 00:19:09,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:19:09,659 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 10 treesize of output 8 [2022-11-26 00:19:09,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-26 00:19:09,818 INFO L321 Elim1Store]: treesize reduction 26, result has 31.6 percent of original size [2022-11-26 00:19:09,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 32 [2022-11-26 00:19:10,053 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:19:10,058 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-26 00:19:10,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 23 [2022-11-26 00:19:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:19:10,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:19:12,201 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_109 Int) (|ULTIMATE.start_main_~acopy~0#1.offset| Int)) (let ((.cse0 (store (let ((.cse1 (* (- 4) |c_ULTIMATE.start_main_~i~0#1|)) (.cse2 (* 4 c_~SIZE~0))) (store (select |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base|) (+ .cse1 (- 4) .cse2 |ULTIMATE.start_main_~acopy~0#1.offset|) (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ .cse1 (- 4) .cse2 |c_ULTIMATE.start_main_~a~0#1.offset|)))) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |ULTIMATE.start_main_~acopy~0#1.offset|) v_ArrVal_109))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~acopy~0#1.base| .cse0) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (select .cse0 (+ |ULTIMATE.start_main_~acopy~0#1.offset| 4))))) is different from false [2022-11-26 00:19:14,720 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:19:14,720 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 4450 treesize of output 3519 [2022-11-26 00:19:14,794 INFO L321 Elim1Store]: treesize reduction 39, result has 62.1 percent of original size [2022-11-26 00:19:14,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 5487 treesize of output 4913 [2022-11-26 00:19:14,862 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-26 00:19:14,863 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 5659 treesize of output 5215