./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/tcpy.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba --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-b5237d8 [2022-11-22 02:24:33,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:24:33,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:24:34,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:24:34,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:24:34,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:24:34,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:24:34,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:24:34,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:24:34,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:24:34,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:24:34,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:24:34,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:24:34,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:24:34,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:24:34,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:24:34,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:24:34,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:24:34,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:24:34,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:24:34,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:24:34,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:24:34,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:24:34,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:24:34,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:24:34,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:24:34,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:24:34,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:24:34,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:24:34,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:24:34,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:24:34,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:24:34,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:24:34,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:24:34,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:24:34,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:24:34,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:24:34,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:24:34,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:24:34,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:24:34,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:24:34,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:24:34,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:24:34,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:24:34,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:24:34,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:24:34,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:24:34,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:24:34,127 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:24:34,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:24:34,127 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:24:34,127 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:24:34,128 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:24:34,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:24:34,129 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:24:34,129 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:24:34,129 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:24:34,129 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:24:34,129 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:24:34,130 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:24:34,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:24:34,131 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:24:34,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:24:34,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:24:34,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:24:34,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:24:34,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:24:34,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:24:34,132 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:24:34,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:24:34,133 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:24:34,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:24:34,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:24:34,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:24:34,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:24:34,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:24:34,134 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:24:34,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:24:34,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:24:34,135 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:24:34,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:24:34,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:24:34,135 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:24:34,136 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_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a747677fdea16741fbb3fca3d9510254677728ef5906b9bf8e219064accd3a39 [2022-11-22 02:24:34,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:24:34,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:24:34,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:24:34,544 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:24:34,544 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:24:34,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/array-tiling/tcpy.c [2022-11-22 02:24:37,676 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:24:37,906 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:24:37,907 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/sv-benchmarks/c/array-tiling/tcpy.c [2022-11-22 02:24:37,915 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/data/5c434ef90/8eba7f4bcb434a0789e973e12c301f91/FLAGb646495c2 [2022-11-22 02:24:37,937 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/data/5c434ef90/8eba7f4bcb434a0789e973e12c301f91 [2022-11-22 02:24:37,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:24:37,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:24:37,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:24:37,944 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:24:37,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:24:37,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:24:37" (1/1) ... [2022-11-22 02:24:37,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bee7439 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:37, skipping insertion in model container [2022-11-22 02:24:37,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:24:37" (1/1) ... [2022-11-22 02:24:37,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:24:37,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:24:38,279 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_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-11-22 02:24:38,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:24:38,345 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:24:38,364 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_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/sv-benchmarks/c/array-tiling/tcpy.c[395,408] [2022-11-22 02:24:38,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:24:38,400 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:24:38,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38 WrapperNode [2022-11-22 02:24:38,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:24:38,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:24:38,403 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:24:38,403 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:24:38,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,431 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,456 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 82 [2022-11-22 02:24:38,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:24:38,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:24:38,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:24:38,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:24:38,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,504 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:24:38,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:24:38,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:24:38,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:24:38,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (1/1) ... [2022-11-22 02:24:38,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:24:38,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:24:38,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:24:38,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:24:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:24:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:24:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:24:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:24:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:24:38,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:24:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:24:38,671 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:24:38,673 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:24:38,848 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:24:38,891 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:24:38,897 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-22 02:24:38,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:24:38 BoogieIcfgContainer [2022-11-22 02:24:38,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:24:38,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:24:38,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:24:38,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:24:38,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:24:37" (1/3) ... [2022-11-22 02:24:38,911 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cab966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:24:38, skipping insertion in model container [2022-11-22 02:24:38,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:24:38" (2/3) ... [2022-11-22 02:24:38,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cab966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:24:38, skipping insertion in model container [2022-11-22 02:24:38,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:24:38" (3/3) ... [2022-11-22 02:24:38,920 INFO L112 eAbstractionObserver]: Analyzing ICFG tcpy.c [2022-11-22 02:24:38,943 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:24:38,944 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:24:39,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:24:39,021 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;@19e71199, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:24:39,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:24:39,027 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) [2022-11-22 02:24:39,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:24:39,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:39,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:39,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:24:39,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash -680536009, now seen corresponding path program 1 times [2022-11-22 02:24:39,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:39,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036515056] [2022-11-22 02:24:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:39,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:24:39,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:39,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036515056] [2022-11-22 02:24:39,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036515056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:24:39,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:24:39,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:24:39,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853869513] [2022-11-22 02:24:39,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:24:39,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:24:39,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:39,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:24:39,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:24:39,429 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) [2022-11-22 02:24:39,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:39,549 INFO L93 Difference]: Finished difference Result 24 states and 33 transitions. [2022-11-22 02:24:39,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:24:39,552 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 [2022-11-22 02:24:39,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:39,560 INFO L225 Difference]: With dead ends: 24 [2022-11-22 02:24:39,560 INFO L226 Difference]: Without dead ends: 11 [2022-11-22 02:24:39,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:24:39,583 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 [2022-11-22 02:24:39,584 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] [2022-11-22 02:24:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-22 02:24:39,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-22 02:24:39,631 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) [2022-11-22 02:24:39,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-11-22 02:24:39,633 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2022-11-22 02:24:39,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:39,635 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-11-22 02:24:39,635 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) [2022-11-22 02:24:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-11-22 02:24:39,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:24:39,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:39,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:39,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:24:39,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:24:39,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:39,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1007490258, now seen corresponding path program 1 times [2022-11-22 02:24:39,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:39,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316600856] [2022-11-22 02:24:39,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:39,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:24:39,847 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:39,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316600856] [2022-11-22 02:24:39,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316600856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:24:39,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659945469] [2022-11-22 02:24:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:39,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:39,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:24:39,852 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:24:39,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:24:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:39,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:24:39,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:24:40,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:24:40,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:24:40,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:24:40,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659945469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:24:40,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1995743757] [2022-11-22 02:24:40,173 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 02:24:40,173 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:24:40,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:24:40,184 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:24:40,186 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:24:40,507 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-22 02:24:40,508 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 [2022-11-22 02:24:40,540 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 [2022-11-22 02:24:40,633 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 [2022-11-22 02:24:40,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:40,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:40,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:40,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:40,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:40,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:40,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:40,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:40,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:40,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:40,910 INFO L321 Elim1Store]: treesize reduction 144, result has 13.3 percent of original size [2022-11-22 02:24:40,911 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 [2022-11-22 02:24:41,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-22 02:24:41,141 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:24:41,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1995743757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:24:41,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:24:41,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 11 [2022-11-22 02:24:41,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119279918] [2022-11-22 02:24:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:24:41,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:24:41,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:41,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:24:41,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:24:41,396 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) [2022-11-22 02:24:41,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:41,646 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2022-11-22 02:24:41,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:24:41,647 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 [2022-11-22 02:24:41,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:41,647 INFO L225 Difference]: With dead ends: 17 [2022-11-22 02:24:41,648 INFO L226 Difference]: Without dead ends: 12 [2022-11-22 02:24:41,648 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 [2022-11-22 02:24:41,650 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:41,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:24:41,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-22 02:24:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-22 02:24:41,656 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) [2022-11-22 02:24:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-11-22 02:24:41,657 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 9 [2022-11-22 02:24:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:41,658 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-11-22 02:24:41,658 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) [2022-11-22 02:24:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-11-22 02:24:41,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:24:41,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:41,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:41,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:24:41,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:41,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:24:41,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1160125243, now seen corresponding path program 1 times [2022-11-22 02:24:41,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:41,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741463300] [2022-11-22 02:24:41,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:41,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:24:42,020 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:42,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741463300] [2022-11-22 02:24:42,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741463300] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:24:42,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765901887] [2022-11-22 02:24:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:42,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:42,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:24:42,023 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:24:42,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:24:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:42,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:24:42,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:24:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:24:42,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:24:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:24:42,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765901887] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:24:42,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [694539424] [2022-11-22 02:24:42,166 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 02:24:42,166 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:24:42,166 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:24:42,167 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:24:42,167 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:24:42,363 INFO L321 Elim1Store]: treesize reduction 111, result has 29.3 percent of original size [2022-11-22 02:24:42,363 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 [2022-11-22 02:24:42,562 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-22 02:24:42,562 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 [2022-11-22 02:24:42,628 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 [2022-11-22 02:24:42,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:42,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:42,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:42,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:42,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:42,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:42,930 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-11-22 02:24:42,931 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 [2022-11-22 02:24:43,207 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 [2022-11-22 02:24:43,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:43,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:43,280 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-22 02:24:43,280 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 [2022-11-22 02:24:43,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:43,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,342 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:43,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,350 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:43,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:43,379 INFO L321 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2022-11-22 02:24:43,379 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 [2022-11-22 02:24:43,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,462 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:43,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:43,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:43,489 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-22 02:24:43,490 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 [2022-11-22 02:24:43,560 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:24:44,195 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 [2022-11-22 02:24:44,196 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:24:44,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:24:44,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-22 02:24:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219001351] [2022-11-22 02:24:44,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:24:44,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:24:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:44,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:24:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:24:44,198 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) [2022-11-22 02:24:44,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:44,267 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2022-11-22 02:24:44,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:24:44,267 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 [2022-11-22 02:24:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:44,268 INFO L225 Difference]: With dead ends: 21 [2022-11-22 02:24:44,268 INFO L226 Difference]: Without dead ends: 13 [2022-11-22 02:24:44,268 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 [2022-11-22 02:24:44,269 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:44,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:24:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-22 02:24:44,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-11-22 02:24:44,275 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) [2022-11-22 02:24:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2022-11-22 02:24:44,275 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 10 [2022-11-22 02:24:44,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:44,276 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2022-11-22 02:24:44,276 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) [2022-11-22 02:24:44,276 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2022-11-22 02:24:44,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-22 02:24:44,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:44,277 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:44,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:24:44,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:44,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:24:44,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:44,484 INFO L85 PathProgramCache]: Analyzing trace with hash -144270058, now seen corresponding path program 2 times [2022-11-22 02:24:44,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:44,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250261865] [2022-11-22 02:24:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:44,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:45,128 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:24:45,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:45,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250261865] [2022-11-22 02:24:45,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250261865] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:24:45,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299597787] [2022-11-22 02:24:45,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:24:45,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:45,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:24:45,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:24:45,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:24:45,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 02:24:45,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:24:45,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-22 02:24:45,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:24:45,224 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 [2022-11-22 02:24:45,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:45,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:45,330 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 [2022-11-22 02:24:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:24:45,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:24:45,423 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:24:45,424 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 [2022-11-22 02:24:45,436 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 [2022-11-22 02:24:48,603 INFO L321 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-11-22 02:24:48,604 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 [2022-11-22 02:24:48,701 INFO L321 Elim1Store]: treesize reduction 27, result has 12.9 percent of original size [2022-11-22 02:24:48,701 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 [2022-11-22 02:24:48,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:48,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:48,804 INFO L321 Elim1Store]: treesize reduction 15, result has 51.6 percent of original size [2022-11-22 02:24:48,805 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 [2022-11-22 02:24:48,868 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:48,869 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 [2022-11-22 02:24:48,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:48,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:48,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:48,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:48,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:48,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:48,947 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 [2022-11-22 02:24:48,968 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 [2022-11-22 02:24:49,022 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:49,023 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 [2022-11-22 02:24:49,044 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:49,044 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 [2022-11-22 02:24:49,094 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,149 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,212 INFO L321 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2022-11-22 02:24:49,212 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 [2022-11-22 02:24:49,310 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:49,311 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 [2022-11-22 02:24:49,328 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:49,328 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 [2022-11-22 02:24:49,355 INFO L321 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2022-11-22 02:24:49,356 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 [2022-11-22 02:24:49,419 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:49,420 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 [2022-11-22 02:24:49,465 INFO L321 Elim1Store]: treesize reduction 5, result has 83.9 percent of original size [2022-11-22 02:24:49,465 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 [2022-11-22 02:24:49,510 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:49,510 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 [2022-11-22 02:24:49,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,542 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 [2022-11-22 02:24:49,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,586 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:49,587 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 [2022-11-22 02:24:49,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,617 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-22 02:24:49,618 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 [2022-11-22 02:24:49,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,637 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 [2022-11-22 02:24:49,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,752 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,765 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,772 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:49,772 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 [2022-11-22 02:24:49,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,791 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:49,792 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 [2022-11-22 02:24:49,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,825 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,831 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:49,831 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 [2022-11-22 02:24:49,843 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 [2022-11-22 02:24:49,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,906 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:49,907 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 [2022-11-22 02:24:49,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,922 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,938 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:49,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:49,945 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 [2022-11-22 02:24:49,975 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:49,976 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 [2022-11-22 02:24:49,994 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:49,994 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 [2022-11-22 02:24:50,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,016 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,017 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 [2022-11-22 02:24:50,034 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:50,035 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 [2022-11-22 02:24:50,063 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:50,064 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 [2022-11-22 02:24:50,086 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-22 02:24:50,087 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 [2022-11-22 02:24:50,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,204 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,219 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,224 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,224 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 [2022-11-22 02:24:50,248 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:50,248 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 [2022-11-22 02:24:50,263 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-22 02:24:50,263 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 [2022-11-22 02:24:50,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,301 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,305 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,306 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 [2022-11-22 02:24:50,321 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:50,322 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 [2022-11-22 02:24:50,339 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:50,339 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 [2022-11-22 02:24:50,344 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,354 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-22 02:24:50,354 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 [2022-11-22 02:24:50,374 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,379 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 [2022-11-22 02:24:50,395 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,400 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,401 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 [2022-11-22 02:24:50,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,419 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,419 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 [2022-11-22 02:24:50,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,441 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,442 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 [2022-11-22 02:24:50,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,460 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,460 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 [2022-11-22 02:24:50,471 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,477 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,477 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 [2022-11-22 02:24:50,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,510 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,511 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 [2022-11-22 02:24:50,527 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,534 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,535 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 [2022-11-22 02:24:50,554 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,560 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,561 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 [2022-11-22 02:24:50,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,578 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,578 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 204 treesize of output 1 [2022-11-22 02:24:50,590 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,595 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,597 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 275 treesize of output 1 [2022-11-22 02:24:50,616 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:50,617 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 [2022-11-22 02:24:50,628 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,635 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,658 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:50,659 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 [2022-11-22 02:24:50,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,678 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,679 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 [2022-11-22 02:24:50,698 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:50,698 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 [2022-11-22 02:24:50,712 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,717 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-22 02:24:50,717 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 [2022-11-22 02:24:50,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,789 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,826 INFO L321 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2022-11-22 02:24:50,826 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 [2022-11-22 02:24:50,871 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 [2022-11-22 02:24:50,896 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,896 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 [2022-11-22 02:24:50,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,957 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 [2022-11-22 02:24:50,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,983 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:50,993 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:50,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,099 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:51,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,109 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:51,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,120 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 [2022-11-22 02:24:51,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:51,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,138 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 [2022-11-22 02:24:51,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:51,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,192 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:51,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:51,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,211 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:51,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,273 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 [2022-11-22 02:24:51,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,288 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 [2022-11-22 02:24:51,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,309 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 [2022-11-22 02:24:51,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,339 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:51,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,389 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 [2022-11-22 02:24:51,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,434 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 [2022-11-22 02:24:51,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,475 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 [2022-11-22 02:24:51,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,496 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 [2022-11-22 02:24:51,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:51,508 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 [2022-11-22 02:24:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:24:51,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299597787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:24:51,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1561119596] [2022-11-22 02:24:51,650 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-22 02:24:51,651 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:24:51,651 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:24:51,651 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:24:51,652 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:24:51,813 INFO L321 Elim1Store]: treesize reduction 136, result has 24.9 percent of original size [2022-11-22 02:24:51,814 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 [2022-11-22 02:24:51,833 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 [2022-11-22 02:24:51,882 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 [2022-11-22 02:24:52,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,026 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:52,081 INFO L321 Elim1Store]: treesize reduction 126, result has 21.7 percent of original size [2022-11-22 02:24:52,082 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 [2022-11-22 02:24:52,290 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 [2022-11-22 02:24:52,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,320 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:52,341 INFO L321 Elim1Store]: treesize reduction 37, result has 35.1 percent of original size [2022-11-22 02:24:52,341 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 [2022-11-22 02:24:52,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:52,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:52,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,401 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:52,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:52,524 INFO L321 Elim1Store]: treesize reduction 200, result has 34.0 percent of original size [2022-11-22 02:24:52,525 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 [2022-11-22 02:24:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,656 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:52,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:24:52,660 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:52,681 INFO L321 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2022-11-22 02:24:52,682 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 [2022-11-22 02:24:52,700 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:24:53,190 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 [2022-11-22 02:24:53,191 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:24:53,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:24:53,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-22 02:24:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404309980] [2022-11-22 02:24:53,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:24:53,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:24:53,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:24:53,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:24:53,193 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) [2022-11-22 02:24:53,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:53,400 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-22 02:24:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:24:53,401 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 [2022-11-22 02:24:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:53,401 INFO L225 Difference]: With dead ends: 19 [2022-11-22 02:24:53,401 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 02:24:53,402 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 [2022-11-22 02:24:53,403 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 36 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:53,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:24:53,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 02:24:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-22 02:24:53,408 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) [2022-11-22 02:24:53,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-22 02:24:53,409 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2022-11-22 02:24:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:53,409 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-22 02:24:53,409 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) [2022-11-22 02:24:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-22 02:24:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:24:53,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:53,410 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:53,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 02:24:53,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:53,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:24:53,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1318200786, now seen corresponding path program 1 times [2022-11-22 02:24:53,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:53,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841008483] [2022-11-22 02:24:53,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:53,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:24:54,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:54,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841008483] [2022-11-22 02:24:54,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841008483] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:24:54,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059242533] [2022-11-22 02:24:54,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:54,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:24:54,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:24:54,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:24:54,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2f5e32e-f1a6-45ec-95d2-b83b5e314459/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:24:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:54,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-22 02:24:54,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:24:54,555 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 [2022-11-22 02:24:54,641 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-22 02:24:54,753 INFO L321 Elim1Store]: treesize reduction 26, result has 31.6 percent of original size [2022-11-22 02:24:54,754 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 [2022-11-22 02:24:55,008 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:24:55,013 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-22 02:24:55,014 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 [2022-11-22 02:24:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:24:55,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:24:57,155 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 [2022-11-22 02:25:01,439 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:25:01,440 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 [2022-11-22 02:25:01,533 INFO L321 Elim1Store]: treesize reduction 39, result has 62.1 percent of original size [2022-11-22 02:25:01,534 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 [2022-11-22 02:25:01,604 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:25:01,605 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