./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-sorted-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P --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 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:30:22,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:30:22,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:30:23,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:30:23,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:30:23,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:30:23,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:30:23,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:30:23,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:30:23,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:30:23,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:30:23,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:30:23,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:30:23,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:30:23,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:30:23,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:30:23,048 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:30:23,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:30:23,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:30:23,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:30:23,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:30:23,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:30:23,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:30:23,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:30:23,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:30:23,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:30:23,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:30:23,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:30:23,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:30:23,076 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:30:23,076 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:30:23,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:30:23,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:30:23,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:30:23,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:30:23,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:30:23,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:30:23,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:30:23,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:30:23,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:30:23,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:30:23,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-21 01:30:23,113 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:30:23,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:30:23,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:30:23,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:30:23,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:30:23,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:30:23,115 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:30:23,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:30:23,115 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:30:23,116 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:30:23,116 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:30:23,116 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:30:23,116 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:30:23,117 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:30:23,117 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:30:23,117 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:30:23,117 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:30:23,118 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:30:23,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:30:23,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:30:23,119 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:30:23,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:30:23,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:30:23,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:30:23,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:30:23,120 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:30:23,121 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:30:23,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:30:23,121 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:30:23,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:30:23,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:30:23,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:30:23,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:30:23,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:30:23,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:30:23,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:30:23,123 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:30:23,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:30:23,124 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:30:23,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:30:23,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:30:23,124 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f [2021-11-21 01:30:23,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:30:23,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:30:23,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:30:23,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:30:23,416 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:30:23,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/forester-heap/sll-sorted-2.i [2021-11-21 01:30:23,520 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/data/58fb5a8a2/d8ba5143294848b3a68f319d900385f7/FLAGb90bc189f [2021-11-21 01:30:24,071 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:30:24,072 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i [2021-11-21 01:30:24,087 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/data/58fb5a8a2/d8ba5143294848b3a68f319d900385f7/FLAGb90bc189f [2021-11-21 01:30:24,351 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/data/58fb5a8a2/d8ba5143294848b3a68f319d900385f7 [2021-11-21 01:30:24,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:30:24,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:30:24,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:30:24,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:30:24,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:30:24,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:24,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e61370f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24, skipping insertion in model container [2021-11-21 01:30:24,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:24,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:30:24,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:30:24,778 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2021-11-21 01:30:24,792 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2021-11-21 01:30:24,798 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2021-11-21 01:30:24,808 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2021-11-21 01:30:24,810 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2021-11-21 01:30:24,813 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2021-11-21 01:30:24,814 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2021-11-21 01:30:24,823 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:30:24,833 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:30:24,868 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2021-11-21 01:30:24,870 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2021-11-21 01:30:24,871 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2021-11-21 01:30:24,875 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2021-11-21 01:30:24,876 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2021-11-21 01:30:24,877 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2021-11-21 01:30:24,878 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2021-11-21 01:30:24,880 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:30:24,909 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:30:24,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24 WrapperNode [2021-11-21 01:30:24,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:30:24,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:30:24,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:30:24,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:30:24,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:24,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:24,964 INFO L137 Inliner]: procedures = 119, calls = 40, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 196 [2021-11-21 01:30:24,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:30:24,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:30:24,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:30:24,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:30:24,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:24,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:24,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:24,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:25,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:25,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:25,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:25,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:30:25,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:30:25,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:30:25,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:30:25,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (1/1) ... [2021-11-21 01:30:25,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:30:25,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:25,089 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:30:25,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:30:25,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:30:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:30:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:30:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:30:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:30:25,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:30:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:30:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:30:25,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:30:25,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:30:25,277 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:30:25,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:30:25,622 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:30:25,692 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:30:25,692 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-21 01:30:25,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:25 BoogieIcfgContainer [2021-11-21 01:30:25,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:30:25,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:30:25,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:30:25,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:30:25,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:30:24" (1/3) ... [2021-11-21 01:30:25,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58859a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:25, skipping insertion in model container [2021-11-21 01:30:25,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:24" (2/3) ... [2021-11-21 01:30:25,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58859a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:25, skipping insertion in model container [2021-11-21 01:30:25,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:25" (3/3) ... [2021-11-21 01:30:25,709 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2021-11-21 01:30:25,715 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:30:25,715 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-21 01:30:25,767 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:30:25,774 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:30:25,774 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-21 01:30:25,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 49 states have internal predecessors, (80), 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) [2021-11-21 01:30:25,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:30:25,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:25,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:30:25,797 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:30:25,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:25,803 INFO L85 PathProgramCache]: Analyzing trace with hash 264006048, now seen corresponding path program 1 times [2021-11-21 01:30:25,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:25,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445144267] [2021-11-21 01:30:25,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:25,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:25,954 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:25,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445144267] [2021-11-21 01:30:25,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445144267] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:25,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:25,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:30:25,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127511687] [2021-11-21 01:30:25,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:25,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:30:25,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:25,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:30:25,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:30:25,993 INFO L87 Difference]: Start difference. First operand has 50 states, 42 states have (on average 1.9047619047619047) internal successors, (80), 49 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-21 01:30:26,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:26,046 INFO L93 Difference]: Finished difference Result 97 states and 155 transitions. [2021-11-21 01:30:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:30:26,049 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2021-11-21 01:30:26,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:26,071 INFO L225 Difference]: With dead ends: 97 [2021-11-21 01:30:26,072 INFO L226 Difference]: Without dead ends: 48 [2021-11-21 01:30:26,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:30:26,079 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:26,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:30:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-21 01:30:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-21 01:30:26,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 47 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) [2021-11-21 01:30:26,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-11-21 01:30:26,117 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 5 [2021-11-21 01:30:26,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:26,118 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-11-21 01:30:26,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-21 01:30:26,119 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-11-21 01:30:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:30:26,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:26,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:30:26,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:30:26,120 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:30:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:26,121 INFO L85 PathProgramCache]: Analyzing trace with hash -423836003, now seen corresponding path program 1 times [2021-11-21 01:30:26,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:26,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464468319] [2021-11-21 01:30:26,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:26,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:26,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:26,181 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464468319] [2021-11-21 01:30:26,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464468319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:26,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:26,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:30:26,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321949718] [2021-11-21 01:30:26,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:26,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:26,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:26,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:26,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:26,189 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:26,238 INFO L93 Difference]: Finished difference Result 96 states and 104 transitions. [2021-11-21 01:30:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 01:30:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:26,240 INFO L225 Difference]: With dead ends: 96 [2021-11-21 01:30:26,241 INFO L226 Difference]: Without dead ends: 51 [2021-11-21 01:30:26,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:26,243 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:26,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 66 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:30:26,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-21 01:30:26,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-11-21 01:30:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.255813953488372) internal successors, (54), 49 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2021-11-21 01:30:26,265 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 6 [2021-11-21 01:30:26,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:26,265 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2021-11-21 01:30:26,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:26,266 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2021-11-21 01:30:26,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 01:30:26,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:26,267 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:26,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:30:26,267 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:30:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:26,268 INFO L85 PathProgramCache]: Analyzing trace with hash -508233960, now seen corresponding path program 1 times [2021-11-21 01:30:26,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:26,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633256333] [2021-11-21 01:30:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:26,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:26,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-21 01:30:26,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:26,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633256333] [2021-11-21 01:30:26,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633256333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:26,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:26,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:30:26,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225753736] [2021-11-21 01:30:26,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:26,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:30:26,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:26,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:30:26,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:30:26,417 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:26,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:26,567 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2021-11-21 01:30:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:30:26,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 01:30:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:26,570 INFO L225 Difference]: With dead ends: 84 [2021-11-21 01:30:26,571 INFO L226 Difference]: Without dead ends: 82 [2021-11-21 01:30:26,572 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:30:26,574 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 114 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:26,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 61 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:30:26,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-21 01:30:26,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 48. [2021-11-21 01:30:26,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 47 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) [2021-11-21 01:30:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-11-21 01:30:26,590 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 8 [2021-11-21 01:30:26,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:26,590 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-11-21 01:30:26,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:26,591 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-11-21 01:30:26,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-21 01:30:26,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:26,592 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:26,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:30:26,593 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:30:26,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:26,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1412257978, now seen corresponding path program 1 times [2021-11-21 01:30:26,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:26,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041998402] [2021-11-21 01:30:26,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:26,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:26,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:26,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:26,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041998402] [2021-11-21 01:30:26,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041998402] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:30:26,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531623242] [2021-11-21 01:30:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:26,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:26,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:26,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:26,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:30:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:26,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-21 01:30:26,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:27,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:30:27,199 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:30:27,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 183 treesize of output 183 [2021-11-21 01:30:27,259 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 01:30:27,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 177 treesize of output 171 [2021-11-21 01:30:27,293 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:30:27,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 244 treesize of output 238 [2021-11-21 01:30:27,319 INFO L354 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2021-11-21 01:30:27,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 238 treesize of output 228 [2021-11-21 01:30:27,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 228 treesize of output 223 [2021-11-21 01:30:27,375 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:30:27,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 223 treesize of output 217 [2021-11-21 01:30:27,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 217 treesize of output 212 [2021-11-21 01:30:27,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-21 01:30:27,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-21 01:30:27,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2021-11-21 01:30:27,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-11-21 01:30:27,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2021-11-21 01:30:27,889 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:30:27,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 50 [2021-11-21 01:30:28,322 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:30:28,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 69 [2021-11-21 01:30:28,334 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-21 01:30:28,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-11-21 01:30:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:28,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:28,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 665 treesize of output 657 [2021-11-21 01:30:28,533 INFO L354 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2021-11-21 01:30:28,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 727 treesize of output 735 [2021-11-21 01:30:28,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 10596 treesize of output 10356 [2021-11-21 01:30:33,835 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:30:33,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 62 treesize of output 66 [2021-11-21 01:30:33,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2021-11-21 01:30:33,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-21 01:30:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:34,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531623242] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:30:34,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [35392194] [2021-11-21 01:30:34,113 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:30:34,114 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:30:34,118 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:30:34,124 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:30:34,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:30:34,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 01:30:34,209 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 01:30:34,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-21 01:30:34,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2021-11-21 01:30:34,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 37 [2021-11-21 01:30:34,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 01:30:34,483 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-21 01:30:34,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 32 treesize of output 53 [2021-11-21 01:30:34,518 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:30:34,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:30:34,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 211 [2021-11-21 01:30:34,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 163 [2021-11-21 01:30:34,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 188 [2021-11-21 01:30:34,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:34,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 35 [2021-11-21 01:30:35,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 41 [2021-11-21 01:30:35,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,561 INFO L354 Elim1Store]: treesize reduction 63, result has 14.9 percent of original size [2021-11-21 01:30:35,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 249 treesize of output 212 [2021-11-21 01:30:35,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,597 INFO L354 Elim1Store]: treesize reduction 67, result has 9.5 percent of original size [2021-11-21 01:30:35,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 212 treesize of output 171 [2021-11-21 01:30:35,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,666 INFO L354 Elim1Store]: treesize reduction 112, result has 17.0 percent of original size [2021-11-21 01:30:35,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 179 treesize of output 175 [2021-11-21 01:30:35,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-11-21 01:30:35,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:35,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-11-21 01:30:36,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:30:36,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:30:36,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:30:36,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:36,918 INFO L354 Elim1Store]: treesize reduction 67, result has 9.5 percent of original size [2021-11-21 01:30:36,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 249 treesize of output 208 [2021-11-21 01:30:36,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:36,961 INFO L354 Elim1Store]: treesize reduction 63, result has 14.9 percent of original size [2021-11-21 01:30:36,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 208 treesize of output 171 [2021-11-21 01:30:36,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:37,029 INFO L354 Elim1Store]: treesize reduction 112, result has 17.0 percent of original size [2021-11-21 01:30:37,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 179 treesize of output 175 [2021-11-21 01:30:37,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:37,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-11-21 01:30:37,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:37,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-11-21 01:30:37,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:30:37,350 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:30:37,779 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:30:37,779 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:30:37,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-11-21 01:30:37,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531920973] [2021-11-21 01:30:37,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:37,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 01:30:37,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:37,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 01:30:37,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-11-21 01:30:37,782 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:38,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:38,578 INFO L93 Difference]: Finished difference Result 154 states and 167 transitions. [2021-11-21 01:30:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-21 01:30:38,579 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-21 01:30:38,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:38,580 INFO L225 Difference]: With dead ends: 154 [2021-11-21 01:30:38,581 INFO L226 Difference]: Without dead ends: 115 [2021-11-21 01:30:38,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 01:30:38,583 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 145 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:38,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 392 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 224 Invalid, 0 Unknown, 41 Unchecked, 0.3s Time] [2021-11-21 01:30:38,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-21 01:30:38,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 56. [2021-11-21 01:30:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.22) internal successors, (61), 55 states have internal predecessors, (61), 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) [2021-11-21 01:30:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-11-21 01:30:38,593 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 14 [2021-11-21 01:30:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:38,593 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-11-21 01:30:38,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-11-21 01:30:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:30:38,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:38,594 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:38,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:38,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:38,814 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:30:38,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:38,815 INFO L85 PathProgramCache]: Analyzing trace with hash 89421662, now seen corresponding path program 1 times [2021-11-21 01:30:38,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:38,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517486619] [2021-11-21 01:30:38,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:38,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:39,080 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:39,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517486619] [2021-11-21 01:30:39,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517486619] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:30:39,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611405642] [2021-11-21 01:30:39,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:39,081 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:39,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:39,082 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:39,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:30:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:39,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-21 01:30:39,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:39,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:30:39,310 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:30:39,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 179 treesize of output 179 [2021-11-21 01:30:39,393 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 01:30:39,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 173 treesize of output 167 [2021-11-21 01:30:39,427 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:30:39,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 236 treesize of output 230 [2021-11-21 01:30:39,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 230 treesize of output 225 [2021-11-21 01:30:39,453 INFO L354 Elim1Store]: treesize reduction 25, result has 30.6 percent of original size [2021-11-21 01:30:39,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 225 treesize of output 215 [2021-11-21 01:30:39,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 215 treesize of output 210 [2021-11-21 01:30:39,475 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:30:39,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 210 treesize of output 204 [2021-11-21 01:30:39,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-21 01:30:39,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-11-21 01:30:39,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2021-11-21 01:30:39,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-11-21 01:30:39,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2021-11-21 01:30:39,824 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:30:39,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 46 [2021-11-21 01:30:40,198 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:30:40,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-11-21 01:30:40,203 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:30:40,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-11-21 01:30:40,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-11-21 01:30:40,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:40,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:40,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 334 treesize of output 330 [2021-11-21 01:30:40,381 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:30:40,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 484 treesize of output 516 [2021-11-21 01:30:40,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2615 treesize of output 2555 [2021-11-21 01:30:40,584 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:30:40,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1851260372] [2021-11-21 01:30:40,589 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2021-11-21 01:30:40,590 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:30:40,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:30:40,590 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:30:40,591 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:30:40,650 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-11-21 01:30:40,651 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 30 [2021-11-21 01:30:40,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:40,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:40,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:40,692 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 01:30:40,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 41 [2021-11-21 01:30:40,744 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-21 01:30:40,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 41 [2021-11-21 01:30:40,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:40,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 01:30:40,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:40,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2021-11-21 01:30:40,973 INFO L354 Elim1Store]: treesize reduction 78, result has 26.4 percent of original size [2021-11-21 01:30:40,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 32 treesize of output 53 [2021-11-21 01:30:40,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:40,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 256 treesize of output 211 [2021-11-21 01:30:41,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 163 [2021-11-21 01:30:41,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,062 INFO L354 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2021-11-21 01:30:41,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 168 treesize of output 196 [2021-11-21 01:30:41,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,314 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:30:41,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 65 treesize of output 45 [2021-11-21 01:30:41,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,494 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:30:41,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 8 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 74 treesize of output 48 [2021-11-21 01:30:41,641 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-21 01:30:41,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 30 [2021-11-21 01:30:41,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:30:41,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,901 INFO L354 Elim1Store]: treesize reduction 63, result has 14.9 percent of original size [2021-11-21 01:30:41,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 249 treesize of output 212 [2021-11-21 01:30:41,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,944 INFO L354 Elim1Store]: treesize reduction 67, result has 9.5 percent of original size [2021-11-21 01:30:41,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 212 treesize of output 171 [2021-11-21 01:30:41,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:41,996 INFO L354 Elim1Store]: treesize reduction 112, result has 17.0 percent of original size [2021-11-21 01:30:41,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 179 treesize of output 175 [2021-11-21 01:30:42,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:42,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-11-21 01:30:42,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:42,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-11-21 01:30:42,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:30:43,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:30:43,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,243 INFO L354 Elim1Store]: treesize reduction 63, result has 14.9 percent of original size [2021-11-21 01:30:43,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 249 treesize of output 212 [2021-11-21 01:30:43,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,293 INFO L354 Elim1Store]: treesize reduction 67, result has 9.5 percent of original size [2021-11-21 01:30:43,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 212 treesize of output 171 [2021-11-21 01:30:43,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,354 INFO L354 Elim1Store]: treesize reduction 112, result has 17.0 percent of original size [2021-11-21 01:30:43,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 179 treesize of output 175 [2021-11-21 01:30:43,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-11-21 01:30:43,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:43,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-11-21 01:30:43,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:30:43,868 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:30:44,360 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:30:44,360 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:30:44,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-21 01:30:44,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040373293] [2021-11-21 01:30:44,360 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:44,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:30:44,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:30:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2021-11-21 01:30:44,362 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:44,603 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2021-11-21 01:30:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:30:44,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-21 01:30:44,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:44,606 INFO L225 Difference]: With dead ends: 76 [2021-11-21 01:30:44,606 INFO L226 Difference]: Without dead ends: 74 [2021-11-21 01:30:44,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=804, Unknown=0, NotChecked=0, Total=930 [2021-11-21 01:30:44,608 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 57 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:44,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 185 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:30:44,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-21 01:30:44,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 60. [2021-11-21 01:30:44,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 59 states have internal predecessors, (66), 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) [2021-11-21 01:30:44,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2021-11-21 01:30:44,617 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 16 [2021-11-21 01:30:44,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:44,618 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2021-11-21 01:30:44,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:44,618 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2021-11-21 01:30:44,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:30:44,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:44,619 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:44,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-21 01:30:44,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:44,824 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:30:44,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:44,824 INFO L85 PathProgramCache]: Analyzing trace with hash -388571595, now seen corresponding path program 2 times [2021-11-21 01:30:44,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:30:44,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487514510] [2021-11-21 01:30:44,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:44,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:30:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:45,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:45,013 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:30:45,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487514510] [2021-11-21 01:30:45,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487514510] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:30:45,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685269459] [2021-11-21 01:30:45,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:30:45,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:45,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:45,015 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:30:45,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:30:45,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-21 01:30:45,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:30:45,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-21 01:30:45,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:45,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-21 01:30:45,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:30:45,199 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-21 01:30:45,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-21 01:30:45,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:45,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 228 treesize of output 187 [2021-11-21 01:30:45,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:45,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 187 treesize of output 146 [2021-11-21 01:30:45,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:45,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:45,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 154 [2021-11-21 01:30:45,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:45,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:45,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2021-11-21 01:30:45,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:45,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:45,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2021-11-21 01:30:45,967 INFO L354 Elim1Store]: treesize reduction 197, result has 10.0 percent of original size [2021-11-21 01:30:45,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 329 treesize of output 279 [2021-11-21 01:30:45,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:45,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:30:46,124 INFO L354 Elim1Store]: treesize reduction 564, result has 10.9 percent of original size [2021-11-21 01:30:46,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 337 treesize of output 337 [2021-11-21 01:30:46,181 INFO L354 Elim1Store]: treesize reduction 261, result has 9.1 percent of original size [2021-11-21 01:30:46,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 345 treesize of output 283 [2021-11-21 01:30:46,212 INFO L354 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2021-11-21 01:30:46,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 284 treesize of output 290 [2021-11-21 01:30:46,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:46,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:46,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 38 [2021-11-21 01:30:46,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:46,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:46,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 44 [2021-11-21 01:30:46,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:46,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:30:46,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 44 [2021-11-21 01:30:49,500 INFO L354 Elim1Store]: treesize reduction 101, result has 7.3 percent of original size [2021-11-21 01:30:49,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 328 treesize of output 284 [2021-11-21 01:30:49,531 INFO L354 Elim1Store]: treesize reduction 52, result has 20.0 percent of original size [2021-11-21 01:30:49,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 284 treesize of output 194 [2021-11-21 01:30:51,844 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-21 01:30:51,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 29 [2021-11-21 01:30:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:51,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:52,222 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-21 01:30:52,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [521158131] [2021-11-21 01:30:52,224 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2021-11-21 01:30:52,224 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:30:52,225 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:30:52,225 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:30:52,225 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:30:52,249 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@de19678 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.assertLhs(IncrementalPlicationChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker.checkPlication(IncrementalPlicationChecker.java:135) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.ArrayIndexEqualityManager.(ArrayIndexEqualityManager.java:92) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:388) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:115) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:278) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 01:30:52,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:30:52,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-21 01:30:52,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700580917] [2021-11-21 01:30:52,253 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-21 01:30:52,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:30:52,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:30:52,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:30:52,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=294, Unknown=2, NotChecked=0, Total=380 [2021-11-21 01:30:52,255 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:30:52,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=294, Unknown=2, NotChecked=0, Total=380 [2021-11-21 01:30:52,256 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:52,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:30:52,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:52,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:30:52,483 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@de19678 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.chooseFalseSuccessor2(BasicAbstractInterpolantAutomaton.java:107) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:73) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-21 01:30:52,487 INFO L158 Benchmark]: Toolchain (without parser) took 28128.57ms. Allocated memory was 130.0MB in the beginning and 302.0MB in the end (delta: 172.0MB). Free memory was 94.9MB in the beginning and 243.3MB in the end (delta: -148.4MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2021-11-21 01:30:52,487 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 53.7MB in the beginning and 53.7MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:30:52,488 INFO L158 Benchmark]: CACSL2BoogieTranslator took 549.17ms. Allocated memory is still 130.0MB. Free memory was 94.6MB in the beginning and 97.3MB in the end (delta: -2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 01:30:52,488 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.00ms. Allocated memory is still 130.0MB. Free memory was 97.3MB in the beginning and 94.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:30:52,488 INFO L158 Benchmark]: Boogie Preprocessor took 70.85ms. Allocated memory is still 130.0MB. Free memory was 94.5MB in the beginning and 92.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 01:30:52,488 INFO L158 Benchmark]: RCFGBuilder took 661.47ms. Allocated memory is still 130.0MB. Free memory was 92.9MB in the beginning and 71.4MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-21 01:30:52,489 INFO L158 Benchmark]: TraceAbstraction took 26786.48ms. Allocated memory was 130.0MB in the beginning and 302.0MB in the end (delta: 172.0MB). Free memory was 71.4MB in the beginning and 243.3MB in the end (delta: -171.9MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2021-11-21 01:30:52,491 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 83.9MB. Free memory was 53.7MB in the beginning and 53.7MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 549.17ms. Allocated memory is still 130.0MB. Free memory was 94.6MB in the beginning and 97.3MB in the end (delta: -2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.00ms. Allocated memory is still 130.0MB. Free memory was 97.3MB in the beginning and 94.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.85ms. Allocated memory is still 130.0MB. Free memory was 94.5MB in the beginning and 92.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 661.47ms. Allocated memory is still 130.0MB. Free memory was 92.9MB in the beginning and 71.4MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 26786.48ms. Allocated memory was 130.0MB in the beginning and 302.0MB in the end (delta: 172.0MB). Free memory was 71.4MB in the beginning and 243.3MB in the end (delta: -171.9MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@de19678 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@de19678: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-21 01:30:52,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-sorted-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P --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 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:30:55,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:30:55,180 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:30:55,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:30:55,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:30:55,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:30:55,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:30:55,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:30:55,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:30:55,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:30:55,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:30:55,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:30:55,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:30:55,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:30:55,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:30:55,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:30:55,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:30:55,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:30:55,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:30:55,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:30:55,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:30:55,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:30:55,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:30:55,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:30:55,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:30:55,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:30:55,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:30:55,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:30:55,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:30:55,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:30:55,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:30:55,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:30:55,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:30:55,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:30:55,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:30:55,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:30:55,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:30:55,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:30:55,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:30:55,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:30:55,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:30:55,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-21 01:30:55,379 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:30:55,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:30:55,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:30:55,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:30:55,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:30:55,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:30:55,383 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:30:55,383 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:30:55,383 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:30:55,383 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:30:55,385 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:30:55,385 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:30:55,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:30:55,387 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:30:55,387 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:30:55,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:30:55,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:30:55,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:30:55,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:30:55,389 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:30:55,389 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:30:55,389 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:30:55,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:30:55,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:30:55,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:30:55,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:30:55,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:30:55,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:30:55,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:30:55,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:30:55,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:30:55,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:30:55,393 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:30:55,393 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:30:55,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:30:55,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:30:55,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:30:55,394 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 618946a6e113450d0f3efa55a455801e1c2225c3ba6f88e87a9e8ad02019b85f [2021-11-21 01:30:55,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:30:55,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:30:55,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:30:55,859 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:30:55,860 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:30:55,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/forester-heap/sll-sorted-2.i [2021-11-21 01:30:55,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/data/fa72a9964/927166e7de244c62a0b8ef7dd10b9cf3/FLAG0c095a187 [2021-11-21 01:30:56,622 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:30:56,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i [2021-11-21 01:30:56,649 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/data/fa72a9964/927166e7de244c62a0b8ef7dd10b9cf3/FLAG0c095a187 [2021-11-21 01:30:56,921 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/data/fa72a9964/927166e7de244c62a0b8ef7dd10b9cf3 [2021-11-21 01:30:56,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:30:56,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:30:56,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:30:56,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:30:56,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:30:56,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:30:56" (1/1) ... [2021-11-21 01:30:56,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f0b56f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:56, skipping insertion in model container [2021-11-21 01:30:56,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:30:56" (1/1) ... [2021-11-21 01:30:56,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:30:57,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:30:57,420 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2021-11-21 01:30:57,447 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2021-11-21 01:30:57,451 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2021-11-21 01:30:57,461 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2021-11-21 01:30:57,467 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2021-11-21 01:30:57,471 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2021-11-21 01:30:57,472 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2021-11-21 01:30:57,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:30:57,501 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:30:57,548 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22317,22330] [2021-11-21 01:30:57,552 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22452,22465] [2021-11-21 01:30:57,557 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22612,22625] [2021-11-21 01:30:57,566 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[22941,22954] [2021-11-21 01:30:57,569 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23005,23018] [2021-11-21 01:30:57,572 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23136,23149] [2021-11-21 01:30:57,575 WARN L230 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_8d3829be-92aa-4ec8-b690-44c89f41f03d/sv-benchmarks/c/forester-heap/sll-sorted-2.i[23200,23213] [2021-11-21 01:30:57,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:30:57,629 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:30:57,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57 WrapperNode [2021-11-21 01:30:57,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:30:57,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:30:57,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:30:57,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:30:57,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (1/1) ... [2021-11-21 01:30:57,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (1/1) ... [2021-11-21 01:30:57,735 INFO L137 Inliner]: procedures = 122, calls = 40, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 189 [2021-11-21 01:30:57,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:30:57,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:30:57,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:30:57,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:30:57,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (1/1) ... [2021-11-21 01:30:57,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (1/1) ... [2021-11-21 01:30:57,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (1/1) ... [2021-11-21 01:30:57,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (1/1) ... [2021-11-21 01:30:57,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (1/1) ... [2021-11-21 01:30:57,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (1/1) ... [2021-11-21 01:30:57,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (1/1) ... [2021-11-21 01:30:57,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:30:57,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:30:57,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:30:57,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:30:57,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (1/1) ... [2021-11-21 01:30:57,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:30:57,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:30:57,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:30:57,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:30:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:30:57,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:30:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:30:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:30:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:30:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:30:57,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:30:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:30:57,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:30:57,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:30:58,071 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:30:58,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:30:58,604 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:30:58,612 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:30:58,625 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-11-21 01:30:58,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:58 BoogieIcfgContainer [2021-11-21 01:30:58,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:30:58,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:30:58,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:30:58,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:30:58,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:30:56" (1/3) ... [2021-11-21 01:30:58,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e833108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:58, skipping insertion in model container [2021-11-21 01:30:58,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:57" (2/3) ... [2021-11-21 01:30:58,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e833108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:58, skipping insertion in model container [2021-11-21 01:30:58,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:58" (3/3) ... [2021-11-21 01:30:58,639 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-sorted-2.i [2021-11-21 01:30:58,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:30:58,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-21 01:30:58,722 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:30:58,744 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:30:58,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-21 01:30:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 59 states have internal predecessors, (97), 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) [2021-11-21 01:30:58,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:30:58,777 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:58,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:30:58,779 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:30:58,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:58,786 INFO L85 PathProgramCache]: Analyzing trace with hash 890122502, now seen corresponding path program 1 times [2021-11-21 01:30:58,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:30:58,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917898179] [2021-11-21 01:30:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:58,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:30:58,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:30:58,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:30:58,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:30:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:58,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-21 01:30:58,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:58,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:59,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:59,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:30:59,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917898179] [2021-11-21 01:30:59,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917898179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:59,021 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:59,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 01:30:59,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707525630] [2021-11-21 01:30:59,024 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:59,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 01:30:59,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:30:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 01:30:59,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:30:59,078 INFO L87 Difference]: Start difference. First operand has 60 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 59 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:59,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:59,123 INFO L93 Difference]: Finished difference Result 115 states and 185 transitions. [2021-11-21 01:30:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 01:30:59,127 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 01:30:59,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:59,139 INFO L225 Difference]: With dead ends: 115 [2021-11-21 01:30:59,139 INFO L226 Difference]: Without dead ends: 54 [2021-11-21 01:30:59,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 01:30:59,150 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:59,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:30:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-21 01:30:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-21 01:30:59,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 53 states have internal predecessors, (63), 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) [2021-11-21 01:30:59,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-11-21 01:30:59,206 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 6 [2021-11-21 01:30:59,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:59,207 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-11-21 01:30:59,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:59,207 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-11-21 01:30:59,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:30:59,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:59,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:30:59,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:59,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:30:59,431 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:30:59,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:59,432 INFO L85 PathProgramCache]: Analyzing trace with hash 889645846, now seen corresponding path program 1 times [2021-11-21 01:30:59,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:30:59,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134271182] [2021-11-21 01:30:59,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:59,434 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:30:59,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:30:59,436 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:30:59,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:30:59,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:30:59,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 01:30:59,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:30:59,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:59,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:30:59,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:30:59,598 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:30:59,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134271182] [2021-11-21 01:30:59,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134271182] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:30:59,603 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:30:59,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 01:30:59,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78529419] [2021-11-21 01:30:59,604 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:30:59,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:30:59,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:30:59,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:30:59,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:59,609 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:59,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:30:59,721 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2021-11-21 01:30:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:30:59,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 01:30:59,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:30:59,724 INFO L225 Difference]: With dead ends: 110 [2021-11-21 01:30:59,724 INFO L226 Difference]: Without dead ends: 58 [2021-11-21 01:30:59,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:30:59,727 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 31 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:30:59,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 82 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:30:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-21 01:30:59,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-11-21 01:30:59,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 50 states have (on average 1.34) internal successors, (67), 56 states have internal predecessors, (67), 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) [2021-11-21 01:30:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2021-11-21 01:30:59,740 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 6 [2021-11-21 01:30:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:30:59,740 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2021-11-21 01:30:59,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:30:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2021-11-21 01:30:59,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:30:59,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:30:59,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:30:59,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:30:59,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:30:59,956 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:30:59,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:30:59,957 INFO L85 PathProgramCache]: Analyzing trace with hash 586319425, now seen corresponding path program 1 times [2021-11-21 01:30:59,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:30:59,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144842343] [2021-11-21 01:30:59,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:30:59,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:30:59,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:30:59,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:30:59,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:31:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:00,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:31:00,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:00,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:31:00,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:31:00,156 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:31:00,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144842343] [2021-11-21 01:31:00,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2144842343] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:31:00,157 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:31:00,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 01:31:00,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042355750] [2021-11-21 01:31:00,158 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:31:00,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:31:00,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:31:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:31:00,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:31:00,162 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 4 states, 4 states have (on average 2.25) 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) [2021-11-21 01:31:00,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:00,403 INFO L93 Difference]: Finished difference Result 95 states and 111 transitions. [2021-11-21 01:31:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:31:00,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) 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 [2021-11-21 01:31:00,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:00,409 INFO L225 Difference]: With dead ends: 95 [2021-11-21 01:31:00,409 INFO L226 Difference]: Without dead ends: 93 [2021-11-21 01:31:00,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:31:00,411 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 140 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:00,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 70 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 01:31:00,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-21 01:31:00,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 55. [2021-11-21 01:31:00,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 54 states have internal predecessors, (65), 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) [2021-11-21 01:31:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2021-11-21 01:31:00,426 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 9 [2021-11-21 01:31:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:00,426 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2021-11-21 01:31:00,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) 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) [2021-11-21 01:31:00,427 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2021-11-21 01:31:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:31:00,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:00,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:00,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:00,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:31:00,642 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:31:00,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:00,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1244464818, now seen corresponding path program 1 times [2021-11-21 01:31:00,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:31:00,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98554734] [2021-11-21 01:31:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:00,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:31:00,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:31:00,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:31:00,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:31:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:00,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:31:00,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:00,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:31:00,901 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:31:00,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 17 treesize of output 17 [2021-11-21 01:31:00,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:00,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:01,176 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-11-21 01:31:01,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 114 [2021-11-21 01:31:01,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 110 treesize of output 102 [2021-11-21 01:31:01,236 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-11-21 01:31:01,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 86 [2021-11-21 01:31:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:01,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:01,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 78 treesize of output 64 [2021-11-21 01:31:02,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1377 treesize of output 1345 [2021-11-21 01:31:02,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1370 treesize of output 1366 [2021-11-21 01:31:02,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:31:02,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98554734] [2021-11-21 01:31:02,377 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:31:02,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1333891955] [2021-11-21 01:31:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:02,378 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:31:02,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:31:02,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:31:02,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-21 01:31:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:02,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-21 01:31:02,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:02,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:31:02,608 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:31:02,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 16 [2021-11-21 01:31:02,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:02,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:02,764 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-11-21 01:31:02,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 114 [2021-11-21 01:31:02,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 110 treesize of output 102 [2021-11-21 01:31:02,809 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-11-21 01:31:02,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 86 [2021-11-21 01:31:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:03,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:03,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 78 treesize of output 64 [2021-11-21 01:31:03,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1377 treesize of output 1345 [2021-11-21 01:31:03,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1370 treesize of output 1366 [2021-11-21 01:31:03,546 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:31:03,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291329974] [2021-11-21 01:31:03,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:03,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:03,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:03,552 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:03,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:31:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:03,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 01:31:03,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:03,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:31:03,696 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:31:03,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 16 [2021-11-21 01:31:03,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:03,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:03,919 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-11-21 01:31:03,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 114 [2021-11-21 01:31:03,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 110 treesize of output 102 [2021-11-21 01:31:03,955 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-11-21 01:31:03,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 86 [2021-11-21 01:31:04,286 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:31:04,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 65 [2021-11-21 01:31:04,309 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:31:04,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 43 [2021-11-21 01:31:04,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 29 treesize of output 17 [2021-11-21 01:31:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:04,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:04,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 78 treesize of output 64 [2021-11-21 01:31:04,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 193 treesize of output 189 [2021-11-21 01:31:04,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 287 treesize of output 283 [2021-11-21 01:31:05,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:05,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291329974] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:05,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:31:05,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-11-21 01:31:05,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236040724] [2021-11-21 01:31:05,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-21 01:31:05,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:31:05,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:31:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:31:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:31:05,279 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:06,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:06,406 INFO L93 Difference]: Finished difference Result 123 states and 147 transitions. [2021-11-21 01:31:06,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:31:06,407 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-21 01:31:06,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:06,408 INFO L225 Difference]: With dead ends: 123 [2021-11-21 01:31:06,408 INFO L226 Difference]: Without dead ends: 80 [2021-11-21 01:31:06,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 70 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:31:06,409 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 42 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:06,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 306 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 142 Invalid, 0 Unknown, 63 Unchecked, 0.9s Time] [2021-11-21 01:31:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-21 01:31:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2021-11-21 01:31:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 65 states have internal predecessors, (80), 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) [2021-11-21 01:31:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2021-11-21 01:31:06,420 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 16 [2021-11-21 01:31:06,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:06,420 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2021-11-21 01:31:06,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:31:06,421 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2021-11-21 01:31:06,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 01:31:06,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:06,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:06,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:06,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:06,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:07,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:31:07,047 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:31:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:07,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1894539407, now seen corresponding path program 1 times [2021-11-21 01:31:07,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:31:07,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186610536] [2021-11-21 01:31:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:07,049 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:31:07,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:31:07,050 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:31:07,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 01:31:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:07,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-21 01:31:07,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:07,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:31:07,202 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:31:07,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 16 [2021-11-21 01:31:07,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:07,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:07,360 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-11-21 01:31:07,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 114 [2021-11-21 01:31:07,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 110 treesize of output 102 [2021-11-21 01:31:07,394 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-11-21 01:31:07,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 86 [2021-11-21 01:31:07,737 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:07,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-11-21 01:31:07,743 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:07,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-11-21 01:31:07,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-11-21 01:31:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:07,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:07,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-11-21 01:31:08,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 360 treesize of output 352 [2021-11-21 01:31:08,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 894 treesize of output 878 [2021-11-21 01:31:11,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:11,069 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:31:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186610536] [2021-11-21 01:31:11,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186610536] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:11,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [275750011] [2021-11-21 01:31:11,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:11,069 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:31:11,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:31:11,079 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:31:11,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-21 01:31:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-21 01:31:11,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:11,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:31:11,394 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 01:31:11,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-21 01:31:11,418 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:31:11,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 16 [2021-11-21 01:31:11,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:11,542 INFO L354 Elim1Store]: treesize reduction 112, result has 14.5 percent of original size [2021-11-21 01:31:11,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 114 [2021-11-21 01:31:11,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 110 treesize of output 102 [2021-11-21 01:31:11,585 INFO L354 Elim1Store]: treesize reduction 88, result has 17.8 percent of original size [2021-11-21 01:31:11,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 86 [2021-11-21 01:31:11,877 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:11,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-11-21 01:31:11,883 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 01:31:11,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-11-21 01:31:11,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-11-21 01:31:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:11,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:11,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-11-21 01:31:12,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 329 treesize of output 321 [2021-11-21 01:31:12,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 510 treesize of output 502 [2021-11-21 01:31:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:12,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [275750011] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:12,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966229327] [2021-11-21 01:31:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:12,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:31:12,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:31:12,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:31:12,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:31:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:12,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 01:31:12,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:12,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:31:12,936 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:31:12,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-21 01:31:12,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:12,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:31:13,110 INFO L354 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2021-11-21 01:31:13,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 111 treesize of output 76 [2021-11-21 01:31:13,130 INFO L354 Elim1Store]: treesize reduction 57, result has 10.9 percent of original size [2021-11-21 01:31:13,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 63 [2021-11-21 01:31:13,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 57 treesize of output 49 [2021-11-21 01:31:13,490 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:31:13,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2021-11-21 01:31:13,497 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-21 01:31:13,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 21 [2021-11-21 01:31:13,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2021-11-21 01:31:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:13,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:13,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 85 [2021-11-21 01:31:13,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1380 treesize of output 1348 [2021-11-21 01:31:13,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1373 treesize of output 1369 [2021-11-21 01:31:13,859 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:31:13,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-21 01:31:13,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 13 [2021-11-21 01:31:13,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690914523] [2021-11-21 01:31:13,860 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-21 01:31:13,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:31:13,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:31:13,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:31:13,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=227, Unknown=1, NotChecked=0, Total=272 [2021-11-21 01:31:13,862 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-11-21 01:31:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:31:15,256 INFO L93 Difference]: Finished difference Result 89 states and 107 transitions. [2021-11-21 01:31:15,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:31:15,257 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-21 01:31:15,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:31:15,259 INFO L225 Difference]: With dead ends: 89 [2021-11-21 01:31:15,260 INFO L226 Difference]: Without dead ends: 87 [2021-11-21 01:31:15,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=68, Invalid=311, Unknown=1, NotChecked=0, Total=380 [2021-11-21 01:31:15,261 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 38 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:31:15,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 365 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 196 Invalid, 0 Unknown, 71 Unchecked, 1.2s Time] [2021-11-21 01:31:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-11-21 01:31:15,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 71. [2021-11-21 01:31:15,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 65 states have (on average 1.323076923076923) internal successors, (86), 70 states have internal predecessors, (86), 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) [2021-11-21 01:31:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2021-11-21 01:31:15,272 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 18 [2021-11-21 01:31:15,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:31:15,273 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2021-11-21 01:31:15,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-11-21 01:31:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2021-11-21 01:31:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 01:31:15,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:31:15,274 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:31:15,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:15,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:31:15,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-21 01:31:15,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:31:15,892 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:31:15,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:31:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -2656163, now seen corresponding path program 1 times [2021-11-21 01:31:15,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:31:15,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495544471] [2021-11-21 01:31:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:15,897 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:31:15,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:31:15,898 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:31:15,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 01:31:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:16,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:31:16,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:16,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:31:16,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-21 01:31:16,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:16,186 INFO L354 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2021-11-21 01:31:16,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 38 [2021-11-21 01:31:16,226 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-21 01:31:16,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-21 01:31:16,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:31:16,446 INFO L354 Elim1Store]: treesize reduction 180, result has 12.6 percent of original size [2021-11-21 01:31:16,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 case distinctions, treesize of input 84 treesize of output 66 [2021-11-21 01:31:16,473 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-21 01:31:16,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 55 [2021-11-21 01:31:16,656 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-21 01:31:16,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-11-21 01:31:17,786 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-21 01:31:17,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 25 [2021-11-21 01:31:17,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:31:17,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:31:20,026 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_75| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_75| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_16)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_75| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_75| v_DerPreprocessor_15) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_75|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_75|))))))) is different from false [2021-11-21 01:31:34,421 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_75| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_76| (_ BitVec 32)) (v_DerPreprocessor_17 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_75| (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_76| (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_76| (_ bv1 1)) |v_ULTIMATE.start_main_~x~0#1.base_75|)))))) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_18)))) (store .cse1 |v_ULTIMATE.start_main_~x~0#1.base_76| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~x~0#1.base_76|) |v_ULTIMATE.start_main_~x~0#1.offset_76| v_DerPreprocessor_17) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_76|) (_ bv0 32)) |v_ULTIMATE.start_main_~x~0#1.offset_76| v_DerPreprocessor_16))))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_75| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_75| v_DerPreprocessor_15) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_75|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_76|)))))) is different from false [2021-11-21 01:31:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-21 01:31:34,447 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:31:34,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495544471] [2021-11-21 01:31:34,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495544471] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:31:34,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1458312814] [2021-11-21 01:31:34,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:31:34,447 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:31:34,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:31:34,464 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:31:34,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-21 01:31:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:31:34,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:31:34,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:31:34,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-21 01:31:34,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:31:34,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:34,807 INFO L354 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2021-11-21 01:31:34,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 38 [2021-11-21 01:31:34,853 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:31:34,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 16 treesize of output 16 [2021-11-21 01:31:34,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:31:35,160 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:31:35,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 107 treesize of output 94 [2021-11-21 01:31:35,254 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-21 01:31:35,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 94 treesize of output 89 [2021-11-21 01:31:35,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:31:35,388 INFO L354 Elim1Store]: treesize reduction 120, result has 26.8 percent of original size [2021-11-21 01:31:35,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 90 treesize of output 90 [2021-11-21 01:31:36,960 INFO L354 Elim1Store]: treesize reduction 56, result has 29.1 percent of original size [2021-11-21 01:31:36,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 136 [2021-11-21 01:31:37,021 INFO L354 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2021-11-21 01:31:37,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 102 [2021-11-21 01:31:37,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:31:37,109 INFO L354 Elim1Store]: treesize reduction 52, result has 37.3 percent of original size [2021-11-21 01:31:37,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 113 [2021-11-21 01:31:59,369 INFO L354 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2021-11-21 01:31:59,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 132 [2021-11-21 01:31:59,720 INFO L354 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2021-11-21 01:31:59,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 132 treesize of output 136 [2021-11-21 01:32:09,472 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-21 01:32:09,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 50 [2021-11-21 01:32:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:32:09,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:32:11,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 391 treesize of output 383 [2021-11-21 01:32:11,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 460 treesize of output 456 [2021-11-21 01:32:15,287 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_24 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_81| (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_23)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_81| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_81|) (_ bv0 32) v_DerPreprocessor_24) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (let ((.cse2 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse3 (= |v_ULTIMATE.start_main_~x~0#1.base_81| (_ bv0 32))) (.cse1 (= |v_ULTIMATE.start_main_~x~0#1.base_81| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (or (not (= (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not .cse1)) (= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|)) (and .cse1 .cse2)) (or .cse3 .cse2) (or .cse3 .cse1))))) is different from false [2021-11-21 01:32:57,210 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_82| (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_81| (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32)) (v_DerPreprocessor_26 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_82| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_82|)))) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_26)))) (store .cse1 |v_ULTIMATE.start_main_~x~0#1.base_82| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~x~0#1.base_82|) |v_ULTIMATE.start_main_~x~0#1.offset_82| v_DerPreprocessor_25) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_82|) (_ bv0 32)) |v_ULTIMATE.start_main_~x~0#1.offset_82| v_DerPreprocessor_23))))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_81| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_81|) (_ bv0 32) v_DerPreprocessor_24) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (let ((.cse2 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|))) (and (or (= |v_ULTIMATE.start_main_~x~0#1.base_81| (_ bv0 32)) .cse2) (or (and (= |v_ULTIMATE.start_main_~x~0#1.base_81| |c_ULTIMATE.start_main_~head~0#1.base|) .cse2) (and (= |v_ULTIMATE.start_main_~x~0#1.offset_82| |c_ULTIMATE.start_main_~head~0#1.offset|) (= |v_ULTIMATE.start_main_~x~0#1.base_82| |c_ULTIMATE.start_main_~head~0#1.base|))))))) is different from false [2021-11-21 01:32:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-21 01:32:57,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1458312814] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:32:57,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833014690] [2021-11-21 01:32:57,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:32:57,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:32:57,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:32:57,248 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:32:57,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-21 01:32:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:32:57,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:32:57,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:32:57,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:32:57,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-21 01:32:57,626 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-21 01:32:57,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 31 [2021-11-21 01:32:57,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:32:57,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2021-11-21 01:32:57,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:32:58,413 INFO L354 Elim1Store]: treesize reduction 180, result has 12.6 percent of original size [2021-11-21 01:32:58,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 case distinctions, treesize of input 82 treesize of output 64 [2021-11-21 01:32:58,565 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-21 01:32:58,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 53 [2021-11-21 01:32:59,042 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-21 01:32:59,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-11-21 01:33:01,590 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-21 01:33:01,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 25 [2021-11-21 01:33:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:33:01,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:33:03,888 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_88| (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_88| (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_30)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_88| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_88|) |v_ULTIMATE.start_main_~x~0#1.offset_88| v_DerPreprocessor_29) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_88|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_88|)))))) is different from false [2021-11-21 01:33:17,785 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_89| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_75| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_89| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_75| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_89|)))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_89| (_ bv1 1)) |v_ULTIMATE.start_main_~x~0#1.base_75|))))))) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_32)))) (store .cse1 |v_ULTIMATE.start_main_~x~0#1.base_89| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~x~0#1.base_89|) |v_ULTIMATE.start_main_~x~0#1.offset_89| v_DerPreprocessor_31) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_89|) (_ bv0 32)) |v_ULTIMATE.start_main_~x~0#1.offset_89| v_DerPreprocessor_16))))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_75| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_75| v_DerPreprocessor_15) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_75|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)))) is different from false [2021-11-21 01:33:17,815 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-21 01:33:17,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833014690] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:33:17,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:33:17,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11, 11, 9, 9] total 31 [2021-11-21 01:33:17,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681634234] [2021-11-21 01:33:17,816 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:33:17,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-21 01:33:17,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:33:17,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-21 01:33:17,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=479, Unknown=16, NotChecked=306, Total=930 [2021-11-21 01:33:17,818 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 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) [2021-11-21 01:33:22,690 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (_ bv0 32)) (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_88| (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_29 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_88| (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_30)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_88| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_88|) |v_ULTIMATE.start_main_~x~0#1.offset_88| v_DerPreprocessor_29) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_88|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_88|)))))) (forall ((v_DerPreprocessor_24 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_81| (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (or (= (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_23)))) (store .cse1 |v_ULTIMATE.start_main_~x~0#1.base_81| (store (store (select .cse1 |v_ULTIMATE.start_main_~x~0#1.base_81|) (_ bv0 32) v_DerPreprocessor_24) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (let ((.cse3 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse4 (= |v_ULTIMATE.start_main_~x~0#1.base_81| (_ bv0 32))) (.cse2 (= |v_ULTIMATE.start_main_~x~0#1.base_81| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (or (not (= (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not .cse2)) (= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|)) (and .cse2 .cse3)) (or .cse4 .cse3) (or .cse4 .cse2))))) (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_75| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_75| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (= (select (select (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_16)))) (store .cse5 |v_ULTIMATE.start_main_~x~0#1.base_75| (store (store (select .cse5 |v_ULTIMATE.start_main_~x~0#1.base_75|) |v_ULTIMATE.start_main_~x~0#1.offset_75| v_DerPreprocessor_15) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_75|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_75|))))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~x~0#1.base|))) (_ bv1 1))) (not (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (= (_ bv0 1) (bvadd (_ bv1 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|)))))))))) is different from false [2021-11-21 01:33:31,603 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (_ bv0 32)) (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (forall ((v_DerPreprocessor_24 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_81| (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_23)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_81| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_81|) (_ bv0 32) v_DerPreprocessor_24) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (let ((.cse2 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse3 (= |v_ULTIMATE.start_main_~x~0#1.base_81| (_ bv0 32))) (.cse1 (= |v_ULTIMATE.start_main_~x~0#1.base_81| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (or (not (= (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not .cse1)) (= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|)) (and .cse1 .cse2)) (or .cse3 .cse2) (or .cse3 .cse1))))) (not (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|))) is different from false [2021-11-21 01:33:38,374 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (_ bv0 32)) (forall ((v_DerPreprocessor_24 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_81| (_ BitVec 32)) (v_DerPreprocessor_23 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_23)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_81| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_81|) (_ bv0 32) v_DerPreprocessor_24) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (let ((.cse2 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse3 (= |v_ULTIMATE.start_main_~x~0#1.base_81| (_ bv0 32))) (.cse1 (= |v_ULTIMATE.start_main_~x~0#1.base_81| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (or (not (= (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not .cse1)) (= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|)) (and .cse1 .cse2)) (or .cse3 .cse2) (or .cse3 .cse1)))))) is different from false [2021-11-21 01:33:52,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:33:52,824 INFO L93 Difference]: Finished difference Result 137 states and 172 transitions. [2021-11-21 01:33:52,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-21 01:33:52,825 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 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 19 [2021-11-21 01:33:52,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:33:52,826 INFO L225 Difference]: With dead ends: 137 [2021-11-21 01:33:52,826 INFO L226 Difference]: Without dead ends: 135 [2021-11-21 01:33:52,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 105.0s TimeCoverageRelationStatistics Valid=232, Invalid=901, Unknown=25, NotChecked=648, Total=1806 [2021-11-21 01:33:52,828 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 67 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 676 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:33:52,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 773 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 676 Unchecked, 2.0s Time] [2021-11-21 01:33:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-21 01:33:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 93. [2021-11-21 01:33:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 92 states have internal predecessors, (117), 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) [2021-11-21 01:33:52,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions. [2021-11-21 01:33:52,845 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 19 [2021-11-21 01:33:52,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:33:52,845 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions. [2021-11-21 01:33:52,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 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) [2021-11-21 01:33:52,846 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions. [2021-11-21 01:33:52,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 01:33:52,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:33:52,848 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:33:52,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:33:53,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2021-11-21 01:33:53,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-21 01:33:53,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:33:53,456 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-21 01:33:53,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:33:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1711469855, now seen corresponding path program 1 times [2021-11-21 01:33:53,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:33:53,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1312063019] [2021-11-21 01:33:53,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:33:53,457 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:33:53,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:33:53,458 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:33:53,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 01:33:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:33:53,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-21 01:33:53,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:33:53,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:33:53,910 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-21 01:33:53,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:33:54,149 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-21 01:33:54,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-21 01:33:54,428 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-21 01:33:54,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-21 01:33:55,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:33:55,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:55,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:33:55,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:33:55,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 21 [2021-11-21 01:33:56,263 INFO L354 Elim1Store]: treesize reduction 78, result has 16.1 percent of original size [2021-11-21 01:33:56,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 216 treesize of output 145 [2021-11-21 01:33:56,587 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-21 01:33:56,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 case distinctions, treesize of input 180 treesize of output 150 [2021-11-21 01:33:56,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 120 [2021-11-21 01:33:56,812 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-21 01:33:56,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 117 treesize of output 119 [2021-11-21 01:33:56,976 INFO L354 Elim1Store]: treesize reduction 41, result has 21.2 percent of original size [2021-11-21 01:33:56,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 78 [2021-11-21 01:33:58,167 INFO L354 Elim1Store]: treesize reduction 126, result has 14.9 percent of original size [2021-11-21 01:33:58,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 248 treesize of output 141 [2021-11-21 01:33:58,328 INFO L354 Elim1Store]: treesize reduction 73, result has 13.1 percent of original size [2021-11-21 01:33:58,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 189 treesize of output 180 [2021-11-21 01:33:58,677 INFO L354 Elim1Store]: treesize reduction 214, result has 13.7 percent of original size [2021-11-21 01:33:58,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 177 treesize of output 148 [2021-11-21 01:34:00,920 INFO L354 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2021-11-21 01:34:00,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 159 treesize of output 100 [2021-11-21 01:34:01,037 INFO L354 Elim1Store]: treesize reduction 54, result has 5.3 percent of original size [2021-11-21 01:34:01,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 53 [2021-11-21 01:34:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:34:01,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:34:05,761 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.offset_94| (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_94| (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_94|)))) (not (= (let ((.cse1 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_94|))) (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_36)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_94| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_94| v_DerPreprocessor_35) .cse1 (_ bv1 32)))) (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.base_94|)))) (store .cse2 |v_ULTIMATE.start_main_~x~0#1.base_94| (store (store (select .cse2 |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_94| (_ bv0 32)) .cse1 v_DerPreprocessor_33))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|)) (bvadd (select (select (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |v_ULTIMATE.start_main_~x~0#1.offset_94|)))) (store .cse3 |v_ULTIMATE.start_main_~x~0#1.base_94| (store (store (select .cse3 |v_ULTIMATE.start_main_~x~0#1.base_94|) |v_ULTIMATE.start_main_~x~0#1.offset_94| (_ bv0 32)) .cse1 v_DerPreprocessor_34))) |c_ULTIMATE.start_main_~head~0#1.base|) |c_ULTIMATE.start_main_~head~0#1.offset|) (_ bv4 32)))) (_ bv0 32))))) is different from false [2021-11-21 01:34:05,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1881 treesize of output 1799 [2021-11-21 01:34:38,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3604662 treesize of output 3594422 [2021-11-21 01:40:18,343 WARN L227 SmtUtils]: Spent 5.66m on a formula simplification. DAG size of input: 5880 DAG size of output: 5880 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:40:18,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3634243 treesize of output 3633859 [2021-11-21 01:41:33,925 WARN L227 SmtUtils]: Spent 1.25m on a formula simplification. DAG size of input: 6536 DAG size of output: 6536 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-21 01:41:33,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:41:33,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1312063019] [2021-11-21 01:41:33,975 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 01:41:33,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1035299360] [2021-11-21 01:41:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:33,976 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:41:33,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:41:33,999 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:41:34,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-21 01:41:34,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:34,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-21 01:41:34,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:41:34,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:41:34,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-21 01:41:34,765 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:41:34,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-21 01:41:34,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:34,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2021-11-21 01:41:35,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:41:36,367 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 01:41:36,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 107 treesize of output 94 [2021-11-21 01:41:36,704 INFO L354 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2021-11-21 01:41:36,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 94 treesize of output 89 [2021-11-21 01:41:36,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:41:37,389 INFO L354 Elim1Store]: treesize reduction 120, result has 26.8 percent of original size [2021-11-21 01:41:37,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 90 treesize of output 90 [2021-11-21 01:41:42,603 INFO L354 Elim1Store]: treesize reduction 56, result has 29.1 percent of original size [2021-11-21 01:41:42,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 136 [2021-11-21 01:41:42,887 INFO L354 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2021-11-21 01:41:42,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 102 [2021-11-21 01:41:42,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:41:43,216 INFO L354 Elim1Store]: treesize reduction 60, result has 27.7 percent of original size [2021-11-21 01:41:43,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 99 treesize of output 105 [2021-11-21 01:42:29,385 INFO L354 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2021-11-21 01:42:29,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 137 treesize of output 132 [2021-11-21 01:42:30,087 INFO L354 Elim1Store]: treesize reduction 32, result has 43.9 percent of original size [2021-11-21 01:42:30,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 132 treesize of output 136 [2021-11-21 01:42:54,176 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-21 01:42:54,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 50 [2021-11-21 01:42:55,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:42:55,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:43:01,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 705 treesize of output 689 [2021-11-21 01:43:01,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 705 treesize of output 701 [2021-11-21 01:43:08,946 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_43 (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_99| (_ BitVec 32))) (or (let ((.cse1 (= |v_ULTIMATE.start_main_~x~0#1.base_99| (_ bv0 32))) (.cse0 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse2 (= |v_ULTIMATE.start_main_~x~0#1.base_99| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (or .cse0 .cse1) (or .cse1 .cse2) (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|) (or (not (= (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not .cse2))) (and .cse0 .cse2)))) (= (_ bv0 32) (select (select (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_44)))) (store .cse3 |v_ULTIMATE.start_main_~x~0#1.base_99| (store (store (select .cse3 |v_ULTIMATE.start_main_~x~0#1.base_99|) (_ bv0 32) v_DerPreprocessor_43) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-21 01:43:12,885 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_43 (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_99| (_ BitVec 32))) (or (let ((.cse1 (= |v_ULTIMATE.start_main_~x~0#1.base_99| (_ bv0 32))) (.cse0 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse2 (= |v_ULTIMATE.start_main_~x~0#1.base_99| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (or .cse0 .cse1) (or .cse1 .cse2) (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|) (or (not (= (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not .cse2))) (and .cse0 .cse2)))) (= (_ bv0 32) (select (select (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|) (_ bv1 32)) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_44)))) (store .cse3 |v_ULTIMATE.start_main_~x~0#1.base_99| (store (store (select .cse3 |v_ULTIMATE.start_main_~x~0#1.base_99|) (_ bv0 32) v_DerPreprocessor_43) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-21 01:43:33,146 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_43 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_100| (_ BitVec 32)) (v_DerPreprocessor_46 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_100| (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (v_DerPreprocessor_45 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_99| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_100|))))))) (let ((.cse1 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse2 (= |v_ULTIMATE.start_main_~x~0#1.base_99| (_ bv0 32))) (.cse0 (= |v_ULTIMATE.start_main_~x~0#1.base_99| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (or (and (= |v_ULTIMATE.start_main_~x~0#1.offset_100| |c_ULTIMATE.start_main_~head~0#1.offset|) (or (not (= (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not .cse0)) (= |c_ULTIMATE.start_main_~head~0#1.base| |v_ULTIMATE.start_main_~x~0#1.base_100|)) (and .cse1 .cse0)) (or .cse1 .cse2) (or .cse2 .cse0))) (= (_ bv0 32) (select (select (let ((.cse3 (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_46)))) (store .cse4 |v_ULTIMATE.start_main_~x~0#1.base_100| (store (store (store (select .cse4 |v_ULTIMATE.start_main_~x~0#1.base_100|) |v_ULTIMATE.start_main_~x~0#1.offset_100| v_DerPreprocessor_45) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_100|) (_ bv1 32)) |v_ULTIMATE.start_main_~x~0#1.offset_100| v_DerPreprocessor_44))))) (store .cse3 |v_ULTIMATE.start_main_~x~0#1.base_99| (store (store (select .cse3 |v_ULTIMATE.start_main_~x~0#1.base_99|) (_ bv0 32) v_DerPreprocessor_43) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|))))) is different from false [2021-11-21 01:43:33,198 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-21 01:43:33,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1035299360] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:43:33,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158715918] [2021-11-21 01:43:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:33,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:33,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:33,200 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:33,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8d3829be-92aa-4ec8-b690-44c89f41f03d/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-21 01:43:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:33,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 01:43:33,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:33,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2021-11-21 01:43:33,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-21 01:43:33,825 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-21 01:43:33,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-21 01:43:34,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:43:34,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 20 [2021-11-21 01:43:35,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-21 01:43:39,276 INFO L354 Elim1Store]: treesize reduction 180, result has 12.6 percent of original size [2021-11-21 01:43:39,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 4 case distinctions, treesize of input 89 treesize of output 71 [2021-11-21 01:43:39,597 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-21 01:43:39,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 60 [2021-11-21 01:43:43,656 INFO L354 Elim1Store]: treesize reduction 84, result has 18.4 percent of original size [2021-11-21 01:43:43,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2021-11-21 01:43:55,442 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-21 01:43:55,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 25 [2021-11-21 01:43:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:43:55,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:43:59,769 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_106| (_ BitVec 32)) (v_DerPreprocessor_50 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_106| (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_50)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_106| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_106|) |v_ULTIMATE.start_main_~x~0#1.offset_106| v_DerPreprocessor_49) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_106|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_106|))))))) is different from false [2021-11-21 01:44:01,927 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_106| (_ BitVec 32)) (v_DerPreprocessor_50 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_106| (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|) (_ bv1 32)) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_50)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_106| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_106|) |v_ULTIMATE.start_main_~x~0#1.offset_106| v_DerPreprocessor_49) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_106|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_106|))))))) is different from false [2021-11-21 01:44:04,578 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_106| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_107| (_ BitVec 32)) (v_DerPreprocessor_50 (_ BitVec 32)) (v_DerPreprocessor_51 (_ BitVec 32)) (v_DerPreprocessor_52 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_106| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_107| (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_107| (_ bv1 1)) |v_ULTIMATE.start_main_~x~0#1.base_106|)))))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_107|)))) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_52)))) (store .cse1 |v_ULTIMATE.start_main_~x~0#1.base_107| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~x~0#1.base_107|) |v_ULTIMATE.start_main_~x~0#1.offset_107| v_DerPreprocessor_51) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_107|) (_ bv1 32)) |v_ULTIMATE.start_main_~x~0#1.offset_107| v_DerPreprocessor_50))))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_106| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_106|) |v_ULTIMATE.start_main_~x~0#1.offset_106| v_DerPreprocessor_49) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_106|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)))) is different from false [2021-11-21 01:44:04,648 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-21 01:44:04,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158715918] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:44:04,649 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-21 01:44:04,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9, 9] total 29 [2021-11-21 01:44:04,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866567630] [2021-11-21 01:44:04,649 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-21 01:44:04,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-21 01:44:04,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:44:04,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-21 01:44:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=974, Unknown=26, NotChecked=490, Total=1640 [2021-11-21 01:44:04,651 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 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) [2021-11-21 01:44:09,371 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~x~0#1.base_106| (_ BitVec 32)) (v_DerPreprocessor_50 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_106| (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|) (_ bv1 32)) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_50)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_106| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_106|) |v_ULTIMATE.start_main_~x~0#1.offset_106| v_DerPreprocessor_49) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_106|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_106|))))))) (forall ((v_DerPreprocessor_43 (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_99| (_ BitVec 32))) (or (let ((.cse2 (= |v_ULTIMATE.start_main_~x~0#1.base_99| (_ bv0 32))) (.cse1 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse3 (= |v_ULTIMATE.start_main_~x~0#1.base_99| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (or .cse1 .cse2) (or .cse2 .cse3) (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|) (or (not (= (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not .cse3))) (and .cse1 .cse3)))) (= (_ bv0 32) (select (select (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|) (_ bv1 32)) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_44)))) (store .cse4 |v_ULTIMATE.start_main_~x~0#1.base_99| (store (store (select .cse4 |v_ULTIMATE.start_main_~x~0#1.base_99|) (_ bv0 32) v_DerPreprocessor_43) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (or (and (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) (_ bv0 32)) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) (_ bv0 32))) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (_ bv0 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~x~0#1.base|))) (_ bv1 1))) (not (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (exists ((v_arrayElimCell_186 (_ BitVec 1))) (let ((.cse5 (bvneg v_arrayElimCell_186))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse5)) (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|))))) (= (_ bv0 1) (bvadd .cse5 (_ bv1 1))))))) is different from false [2021-11-21 01:44:11,429 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~x~0#1.base_106| (_ BitVec 32)) (v_DerPreprocessor_50 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_106| (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (or (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|) (_ bv1 32)) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_50)))) (store .cse0 |v_ULTIMATE.start_main_~x~0#1.base_106| (store (store (select .cse0 |v_ULTIMATE.start_main_~x~0#1.base_106|) |v_ULTIMATE.start_main_~x~0#1.offset_106| v_DerPreprocessor_49) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_106|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_106|))))))) (forall ((v_DerPreprocessor_43 (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_99| (_ BitVec 32))) (or (let ((.cse2 (= |v_ULTIMATE.start_main_~x~0#1.base_99| (_ bv0 32))) (.cse1 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse3 (= |v_ULTIMATE.start_main_~x~0#1.base_99| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (or .cse1 .cse2) (or .cse2 .cse3) (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|) (or (not (= (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not .cse3))) (and .cse1 .cse3)))) (= (_ bv0 32) (select (select (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|) (_ bv1 32)) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_44)))) (store .cse4 |v_ULTIMATE.start_main_~x~0#1.base_99| (store (store (select .cse4 |v_ULTIMATE.start_main_~x~0#1.base_99|) (_ bv0 32) v_DerPreprocessor_43) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~x~0#1.base|))) (_ bv1 1))) (not (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (exists ((v_arrayElimCell_186 (_ BitVec 1))) (let ((.cse5 (bvneg v_arrayElimCell_186))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse5)) (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|))))) (= (_ bv0 1) (bvadd .cse5 (_ bv1 1))))))) is different from false [2021-11-21 01:44:14,234 WARN L838 $PredicateComparison]: unable to prove that (and (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (_ bv1 32)) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (forall ((v_DerPreprocessor_43 (_ BitVec 32)) (v_DerPreprocessor_44 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.base_99| (_ BitVec 32))) (or (let ((.cse1 (= |v_ULTIMATE.start_main_~x~0#1.base_99| (_ bv0 32))) (.cse0 (= (_ bv0 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (.cse2 (= |v_ULTIMATE.start_main_~x~0#1.base_99| |c_ULTIMATE.start_main_~head~0#1.base|))) (and (or .cse0 .cse1) (or .cse1 .cse2) (or (and (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|) (= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~head~0#1.offset|) (or (not (= (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (not .cse2))) (and .cse0 .cse2)))) (= (_ bv0 32) (select (select (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_44)))) (store .cse3 |v_ULTIMATE.start_main_~x~0#1.base_99| (store (store (select .cse3 |v_ULTIMATE.start_main_~x~0#1.base_99|) (_ bv0 32) v_DerPreprocessor_43) (_ bv4 32) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|))))) (= (_ bv0 1) (bvadd (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~x~0#1.base|))) (_ bv1 1))) (not (= |c_ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~head~0#1.base|)) (exists ((v_arrayElimCell_186 (_ BitVec 1))) (let ((.cse4 (bvneg v_arrayElimCell_186))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse4)) (bvneg (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~head~0#1.base|))))) (= (_ bv0 1) (bvadd .cse4 (_ bv1 1)))))) (forall ((|v_ULTIMATE.start_main_~x~0#1.base_106| (_ BitVec 32)) (v_DerPreprocessor_50 (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1.offset_106| (_ BitVec 32)) (v_DerPreprocessor_49 (_ BitVec 32))) (or (= (select (select (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_DerPreprocessor_50)))) (store .cse5 |v_ULTIMATE.start_main_~x~0#1.base_106| (store (store (select .cse5 |v_ULTIMATE.start_main_~x~0#1.base_106|) |v_ULTIMATE.start_main_~x~0#1.offset_106| v_DerPreprocessor_49) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~x~0#1.offset_106|) (_ bv1 32)))) |c_ULTIMATE.start_main_~head~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~head~0#1.offset|)) (_ bv0 32)) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_106|)))))))) is different from false