./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-buckets-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-buckets-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS --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 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb --- 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-8393723 [2022-11-19 08:27:18,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:27:18,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:27:18,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:27:18,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:27:18,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:27:18,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:27:18,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:27:18,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:27:18,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:27:18,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:27:18,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:27:18,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:27:18,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:27:18,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:27:18,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:27:18,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:27:18,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:27:18,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:27:18,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:27:18,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:27:18,763 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:27:18,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:27:18,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:27:18,772 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:27:18,773 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:27:18,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:27:18,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:27:18,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:27:18,777 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:27:18,777 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:27:18,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:27:18,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:27:18,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:27:18,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:27:18,783 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:27:18,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:27:18,784 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:27:18,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:27:18,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:27:18,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:27:18,795 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:27:18,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:27:18,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:27:18,848 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:27:18,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:27:18,849 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:27:18,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:27:18,850 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:27:18,851 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:27:18,851 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:27:18,851 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:27:18,853 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:27:18,853 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:27:18,853 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:27:18,854 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:27:18,854 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:27:18,854 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:27:18,854 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:27:18,855 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:27:18,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:27:18,856 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:27:18,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:27:18,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:27:18,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:27:18,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:27:18,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:27:18,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:27:18,860 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:27:18,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:27:18,860 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:27:18,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:27:18,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:27:18,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:27:18,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:27:18,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:27:18,862 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:27:18,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:27:18,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:27:18,863 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:27:18,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:27:18,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:27:18,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:27:18,864 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a4c2149f6fe1f453f0ff04220f5041f2227f6654d0fa84d48205415ce284fcb [2022-11-19 08:27:19,214 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:27:19,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:27:19,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:27:19,265 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:27:19,266 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:27:19,268 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/forester-heap/sll-buckets-2.i [2022-11-19 08:27:19,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/data/dde15b56f/6e679bf7f3d34f90adf4a296b1f96848/FLAG68961a3a4 [2022-11-19 08:27:20,094 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:27:20,095 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i [2022-11-19 08:27:20,111 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/data/dde15b56f/6e679bf7f3d34f90adf4a296b1f96848/FLAG68961a3a4 [2022-11-19 08:27:20,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/data/dde15b56f/6e679bf7f3d34f90adf4a296b1f96848 [2022-11-19 08:27:20,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:27:20,384 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:27:20,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:27:20,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:27:20,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:27:20,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:27:20" (1/1) ... [2022-11-19 08:27:20,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a9e5e62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:20, skipping insertion in model container [2022-11-19 08:27:20,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:27:20" (1/1) ... [2022-11-19 08:27:20,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:27:20,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:27:20,923 WARN L234 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2022-11-19 08:27:20,930 WARN L234 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2022-11-19 08:27:20,932 WARN L234 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2022-11-19 08:27:20,943 WARN L234 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2022-11-19 08:27:20,945 WARN L234 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2022-11-19 08:27:20,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:27:20,959 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:27:21,002 WARN L234 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22663,22676] [2022-11-19 08:27:21,004 WARN L234 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22734,22747] [2022-11-19 08:27:21,006 WARN L234 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[22862,22875] [2022-11-19 08:27:21,010 WARN L234 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23275,23288] [2022-11-19 08:27:21,011 WARN L234 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_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/sv-benchmarks/c/forester-heap/sll-buckets-2.i[23364,23377] [2022-11-19 08:27:21,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:27:21,068 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:27:21,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21 WrapperNode [2022-11-19 08:27:21,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:27:21,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:27:21,071 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:27:21,071 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:27:21,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,126 INFO L138 Inliner]: procedures = 119, calls = 42, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 155 [2022-11-19 08:27:21,127 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:27:21,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:27:21,128 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:27:21,128 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:27:21,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,185 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:27:21,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:27:21,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:27:21,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:27:21,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (1/1) ... [2022-11-19 08:27:21,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:27:21,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:21,247 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:27:21,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:27:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 08:27:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 08:27:21,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 08:27:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:27:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 08:27:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 08:27:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 08:27:21,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:27:21,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:27:21,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:27:21,531 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:27:21,534 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:27:22,088 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:27:22,185 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:27:22,185 INFO L300 CfgBuilder]: Removed 15 assume(true) statements. [2022-11-19 08:27:22,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:27:22 BoogieIcfgContainer [2022-11-19 08:27:22,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:27:22,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:27:22,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:27:22,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:27:22,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:27:20" (1/3) ... [2022-11-19 08:27:22,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4673d810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:27:22, skipping insertion in model container [2022-11-19 08:27:22,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:27:21" (2/3) ... [2022-11-19 08:27:22,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4673d810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:27:22, skipping insertion in model container [2022-11-19 08:27:22,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:27:22" (3/3) ... [2022-11-19 08:27:22,218 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets-2.i [2022-11-19 08:27:22,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:27:22,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-11-19 08:27:22,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:27:22,410 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;@48a47413, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:27:22,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-19 08:27:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 31 states have (on average 1.935483870967742) internal successors, (60), 36 states have internal predecessors, (60), 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) [2022-11-19 08:27:22,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:27:22,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:22,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:27:22,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:27:22,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:22,440 INFO L85 PathProgramCache]: Analyzing trace with hash 196178540, now seen corresponding path program 1 times [2022-11-19 08:27:22,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:22,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575387995] [2022-11-19 08:27:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:22,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:23,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:23,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575387995] [2022-11-19 08:27:23,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575387995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:23,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:27:23,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:27:23,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993027476] [2022-11-19 08:27:23,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:23,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:27:23,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:23,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:27:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:27:23,127 INFO L87 Difference]: Start difference. First operand has 37 states, 31 states have (on average 1.935483870967742) internal successors, (60), 36 states have internal predecessors, (60), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-19 08:27:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:23,404 INFO L93 Difference]: Finished difference Result 96 states and 160 transitions. [2022-11-19 08:27:23,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:27:23,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2022-11-19 08:27:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:23,421 INFO L225 Difference]: With dead ends: 96 [2022-11-19 08:27:23,421 INFO L226 Difference]: Without dead ends: 59 [2022-11-19 08:27:23,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:27:23,437 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 83 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:23,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 56 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:27:23,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-19 08:27:23,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2022-11-19 08:27:23,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.303030303030303) internal successors, (43), 36 states have internal predecessors, (43), 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) [2022-11-19 08:27:23,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-11-19 08:27:23,488 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 5 [2022-11-19 08:27:23,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:23,489 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-11-19 08:27:23,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-19 08:27:23,490 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-11-19 08:27:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 08:27:23,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:23,491 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:23,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:27:23,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:27:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:23,493 INFO L85 PathProgramCache]: Analyzing trace with hash -450856688, now seen corresponding path program 1 times [2022-11-19 08:27:23,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:23,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803082705] [2022-11-19 08:27:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:23,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:23,599 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:23,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803082705] [2022-11-19 08:27:23,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803082705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:23,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:27:23,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:27:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342034756] [2022-11-19 08:27:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:23,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:27:23,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:23,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:27:23,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:27:23,604 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:23,783 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-11-19 08:27:23,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:27:23,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-19 08:27:23,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:23,786 INFO L225 Difference]: With dead ends: 41 [2022-11-19 08:27:23,786 INFO L226 Difference]: Without dead ends: 39 [2022-11-19 08:27:23,787 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 [2022-11-19 08:27:23,789 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:23,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 46 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:27:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-19 08:27:23,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2022-11-19 08:27:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 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) [2022-11-19 08:27:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-11-19 08:27:23,800 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 7 [2022-11-19 08:27:23,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:23,800 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-11-19 08:27:23,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-11-19 08:27:23,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:27:23,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:23,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:23,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:27:23,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:27:23,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:23,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1874340424, now seen corresponding path program 1 times [2022-11-19 08:27:23,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:23,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401608375] [2022-11-19 08:27:23,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:23,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:23,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:23,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:23,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401608375] [2022-11-19 08:27:23,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401608375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:23,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:27:23,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:27:23,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830703234] [2022-11-19 08:27:23,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:23,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:27:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:23,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:27:23,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:27:23,912 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. 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) [2022-11-19 08:27:24,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:24,076 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2022-11-19 08:27:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:27:24,079 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 [2022-11-19 08:27:24,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:24,080 INFO L225 Difference]: With dead ends: 39 [2022-11-19 08:27:24,080 INFO L226 Difference]: Without dead ends: 37 [2022-11-19 08:27:24,081 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 [2022-11-19 08:27:24,082 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:24,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 54 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:27:24,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-19 08:27:24,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-19 08:27:24,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 32 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:27:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-19 08:27:24,092 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 8 [2022-11-19 08:27:24,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:24,092 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-19 08:27:24,093 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) [2022-11-19 08:27:24,093 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-19 08:27:24,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 08:27:24,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:24,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:24,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:27:24,094 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:27:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:24,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2023416261, now seen corresponding path program 1 times [2022-11-19 08:27:24,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:24,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109208705] [2022-11-19 08:27:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:24,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:25,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:25,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109208705] [2022-11-19 08:27:25,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109208705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:27:25,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:27:25,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:27:25,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602489693] [2022-11-19 08:27:25,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:27:25,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:27:25,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:25,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:27:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:27:25,308 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-11-19 08:27:25,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:25,521 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2022-11-19 08:27:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:27:25,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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 [2022-11-19 08:27:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:25,524 INFO L225 Difference]: With dead ends: 52 [2022-11-19 08:27:25,524 INFO L226 Difference]: Without dead ends: 41 [2022-11-19 08:27:25,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:27:25,536 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 14 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:25,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 81 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:27:25,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-19 08:27:25,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-11-19 08:27:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.25) internal successors, (45), 37 states have internal predecessors, (45), 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) [2022-11-19 08:27:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2022-11-19 08:27:25,554 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 9 [2022-11-19 08:27:25,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:25,555 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2022-11-19 08:27:25,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-11-19 08:27:25,556 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2022-11-19 08:27:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 08:27:25,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:25,558 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:25,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:27:25,558 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:27:25,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:25,560 INFO L85 PathProgramCache]: Analyzing trace with hash 783479132, now seen corresponding path program 1 times [2022-11-19 08:27:25,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:25,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951998673] [2022-11-19 08:27:25,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:25,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:26,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:26,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:26,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951998673] [2022-11-19 08:27:26,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951998673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:26,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403350067] [2022-11-19 08:27:26,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:26,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:26,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:26,203 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:26,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:27:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:26,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-19 08:27:26,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:26,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:26,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 26 [2022-11-19 08:27:26,644 INFO L321 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2022-11-19 08:27:26,645 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 65 treesize of output 64 [2022-11-19 08:27:26,700 INFO L321 Elim1Store]: treesize reduction 76, result has 16.5 percent of original size [2022-11-19 08:27:26,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 51 treesize of output 46 [2022-11-19 08:27:26,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:26,914 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 96 [2022-11-19 08:27:26,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 104 [2022-11-19 08:27:26,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 61 [2022-11-19 08:27:27,004 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-19 08:27:27,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-19 08:27:27,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 18 treesize of output 1 [2022-11-19 08:27:27,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-19 08:27:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:27,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:27,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:27:27,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 91 [2022-11-19 08:27:27,254 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-19 08:27:27,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 121 [2022-11-19 08:27:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:27,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403350067] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:27,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1153545692] [2022-11-19 08:27:27,397 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-11-19 08:27:27,397 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:27,402 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:27,408 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:27,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:27,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:27,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:27,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:27,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:27,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:27,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:28,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:28,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:28,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:28,113 INFO L217 Elim1Store]: Index analysis took 525 ms [2022-11-19 08:27:28,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 32 [2022-11-19 08:27:28,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:28,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:28,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:28,602 INFO L217 Elim1Store]: Index analysis took 296 ms [2022-11-19 08:27:29,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 26 [2022-11-19 08:27:29,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:29,369 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:29,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:29,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:30,187 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-19 08:27:30,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 301 treesize of output 195 [2022-11-19 08:27:30,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:30,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:30,248 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:30,251 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:31,172 INFO L321 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2022-11-19 08:27:31,173 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 282 treesize of output 217 [2022-11-19 08:27:31,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 12 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 59 [2022-11-19 08:27:31,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 67 [2022-11-19 08:27:31,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 53 [2022-11-19 08:27:31,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 57 [2022-11-19 08:27:31,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 47 [2022-11-19 08:27:31,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 56 [2022-11-19 08:27:31,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 59 [2022-11-19 08:27:31,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:31,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:31,809 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:31,972 INFO L321 Elim1Store]: treesize reduction 124, result has 19.0 percent of original size [2022-11-19 08:27:31,973 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 9 new quantified variables, introduced 18 case distinctions, treesize of input 410 treesize of output 303 [2022-11-19 08:27:32,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 13 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 211 treesize of output 194 [2022-11-19 08:27:32,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 5 select indices, 5 select index equivalence classes, 18 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 290 [2022-11-19 08:27:32,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,323 INFO L321 Elim1Store]: treesize reduction 72, result has 1.4 percent of original size [2022-11-19 08:27:32,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 13 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 58 [2022-11-19 08:27:32,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:32,493 INFO L321 Elim1Store]: treesize reduction 54, result has 15.6 percent of original size [2022-11-19 08:27:32,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 17 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 5 case distinctions, treesize of input 54 treesize of output 73 [2022-11-19 08:27:33,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,103 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-19 08:27:33,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 179 [2022-11-19 08:27:33,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,134 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 26 treesize of output 18 [2022-11-19 08:27:33,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,214 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-19 08:27:33,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 137 treesize of output 129 [2022-11-19 08:27:33,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,236 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 24 treesize of output 16 [2022-11-19 08:27:33,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:33,257 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 17 treesize of output 11 [2022-11-19 08:27:34,515 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:27:37,602 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '637#(and (= |ULTIMATE.start_main_~itr~0#1.offset| 0) (= |ULTIMATE.start_main_~item~0#1.offset| 0) (= |ULTIMATE.start_main_~bucket~0#1.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~bcki~0#1.base|) (+ 8 |ULTIMATE.start_main_~bcki~0#1.offset|)) (select (select |#memory_int| |ULTIMATE.start_main_~item~0#1.base|) (+ 4 |ULTIMATE.start_main_~item~0#1.offset|))) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~itr~0#1.base| 0) (= |ULTIMATE.start_main_~bcki~0#1.base| 0) (<= 0 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~bcki~0#1.offset| 0) (= |#NULL.base| 0))' at error location [2022-11-19 08:27:37,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:27:37,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:27:37,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-19 08:27:37,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469806792] [2022-11-19 08:27:37,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:27:37,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 08:27:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:27:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 08:27:37,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-19 08:27:37,605 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 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) [2022-11-19 08:27:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:27:37,970 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2022-11-19 08:27:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:27:37,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 08:27:37,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:27:37,975 INFO L225 Difference]: With dead ends: 82 [2022-11-19 08:27:37,976 INFO L226 Difference]: Without dead ends: 80 [2022-11-19 08:27:37,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-19 08:27:37,977 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:27:37,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 74 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 33 Unchecked, 0.3s Time] [2022-11-19 08:27:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-19 08:27:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 44. [2022-11-19 08:27:37,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 43 states have internal predecessors, (52), 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) [2022-11-19 08:27:37,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-11-19 08:27:37,990 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 13 [2022-11-19 08:27:37,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:27:37,990 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-11-19 08:27:37,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 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) [2022-11-19 08:27:37,991 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-11-19 08:27:37,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 08:27:37,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:27:37,992 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:27:38,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:27:38,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:38,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-11-19 08:27:38,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:27:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash -770353938, now seen corresponding path program 1 times [2022-11-19 08:27:38,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:27:38,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441913481] [2022-11-19 08:27:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:38,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:27:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:39,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:27:39,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441913481] [2022-11-19 08:27:39,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441913481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:27:39,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603962812] [2022-11-19 08:27:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:27:39,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:27:39,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:27:39,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:27:39,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ded3eb8-7b94-47d7-9ce5-fa3a7079e73b/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:27:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:27:39,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-19 08:27:39,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:27:39,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,658 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 32 [2022-11-19 08:27:39,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,668 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 36 [2022-11-19 08:27:39,708 INFO L321 Elim1Store]: treesize reduction 50, result has 25.4 percent of original size [2022-11-19 08:27:39,709 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 66 treesize of output 67 [2022-11-19 08:27:39,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 31 [2022-11-19 08:27:39,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-11-19 08:27:39,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 23 [2022-11-19 08:27:39,778 INFO L321 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-11-19 08:27:39,779 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 72 treesize of output 56 [2022-11-19 08:27:39,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:39,950 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-19 08:27:39,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 59 [2022-11-19 08:27:39,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:39,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 48 [2022-11-19 08:27:40,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:40,158 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-19 08:27:40,159 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 52 [2022-11-19 08:27:40,177 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-19 08:27:40,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 21 [2022-11-19 08:27:40,204 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:40,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:27:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:27:40,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603962812] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:27:40,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [115498541] [2022-11-19 08:27:40,498 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:27:40,499 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:27:40,499 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:27:40,499 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:27:40,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:27:40,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:40,983 INFO L217 Elim1Store]: Index analysis took 285 ms [2022-11-19 08:27:41,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 26 [2022-11-19 08:27:41,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:41,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:41,970 INFO L321 Elim1Store]: treesize reduction 34, result has 33.3 percent of original size [2022-11-19 08:27:41,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 308 treesize of output 202 [2022-11-19 08:27:42,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:42,013 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:42,506 INFO L321 Elim1Store]: treesize reduction 82, result has 27.4 percent of original size [2022-11-19 08:27:42,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 289 treesize of output 224 [2022-11-19 08:27:42,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,653 INFO L321 Elim1Store]: treesize reduction 146, result has 22.8 percent of original size [2022-11-19 08:27:42,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 51 treesize of output 85 [2022-11-19 08:27:42,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 18 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 59 [2022-11-19 08:27:42,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 67 [2022-11-19 08:27:42,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 12 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 57 [2022-11-19 08:27:42,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 47 [2022-11-19 08:27:42,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 14 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 56 [2022-11-19 08:27:42,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 59 [2022-11-19 08:27:42,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:42,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 13 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 36 [2022-11-19 08:27:43,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:43,148 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:43,231 INFO L321 Elim1Store]: treesize reduction 196, result has 10.1 percent of original size [2022-11-19 08:27:43,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 319 treesize of output 190 [2022-11-19 08:27:43,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 75 [2022-11-19 08:27:43,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,313 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:43,314 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:43,382 INFO L321 Elim1Store]: treesize reduction 344, result has 10.9 percent of original size [2022-11-19 08:27:43,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 20 case distinctions, treesize of input 182 treesize of output 147 [2022-11-19 08:27:43,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 61 [2022-11-19 08:27:43,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 14 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-11-19 08:27:43,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:43,702 INFO L321 Elim1Store]: treesize reduction 124, result has 12.7 percent of original size [2022-11-19 08:27:43,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 9 new quantified variables, introduced 23 case distinctions, treesize of input 278 treesize of output 164 [2022-11-19 08:27:43,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:43,764 INFO L321 Elim1Store]: treesize reduction 37, result has 7.5 percent of original size [2022-11-19 08:27:43,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 14 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 2 case distinctions, treesize of input 96 treesize of output 92 [2022-11-19 08:27:43,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 08:27:43,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:27:44,044 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-19 08:27:44,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-19 08:27:44,102 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-19 08:27:44,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-19 08:27:44,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 08:27:44,619 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-19 08:27:44,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-19 08:27:44,676 INFO L321 Elim1Store]: treesize reduction 18, result has 64.0 percent of original size [2022-11-19 08:27:44,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 47 [2022-11-19 08:27:44,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2022-11-19 08:27:45,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-19 08:27:45,125 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:45,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:45,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:45,940 INFO L321 Elim1Store]: treesize reduction 330, result has 38.2 percent of original size [2022-11-19 08:27:45,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 12 new quantified variables, introduced 34 case distinctions, treesize of input 487 treesize of output 522 [2022-11-19 08:27:46,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:46,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:46,408 INFO L321 Elim1Store]: treesize reduction 130, result has 57.0 percent of original size [2022-11-19 08:27:46,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 310 treesize of output 434 [2022-11-19 08:27:46,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 08:27:46,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:46,463 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-19 08:27:47,079 INFO L321 Elim1Store]: treesize reduction 330, result has 38.2 percent of original size [2022-11-19 08:27:47,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 33 case distinctions, treesize of input 464 treesize of output 577 [2022-11-19 08:33:06,464 WARN L233 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 1614 DAG size of output: 1614 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-11-19 08:38:42,090 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 908 DAG size of output: 908 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)