./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V --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 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:09:43,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:09:43,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:09:43,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:09:43,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:09:43,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:09:43,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:09:43,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:09:43,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:09:43,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:09:43,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:09:43,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:09:43,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:09:43,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:09:43,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:09:43,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:09:43,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:09:43,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:09:43,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:09:43,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:09:43,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:09:43,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:09:43,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:09:43,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:09:43,587 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:09:43,588 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:09:43,588 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:09:43,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:09:43,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:09:43,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:09:43,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:09:43,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:09:43,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:09:43,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:09:43,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:09:43,603 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:09:43,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:09:43,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:09:43,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:09:43,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:09:43,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:09:43,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:09:43,669 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:09:43,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:09:43,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:09:43,671 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:09:43,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:09:43,680 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:09:43,680 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:09:43,680 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:09:43,681 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:09:43,681 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:09:43,682 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:09:43,683 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:09:43,683 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:09:43,683 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:09:43,683 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:09:43,684 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:09:43,684 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:09:43,684 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:09:43,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:09:43,687 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:09:43,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:09:43,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:09:43,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:09:43,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:09:43,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:09:43,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:09:43,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:09:43,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:09:43,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:09:43,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:09:43,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:09:43,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:09:43,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:09:43,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:09:43,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:09:43,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:09:43,695 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:09:43,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:09:43,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:09:43,695 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:09:43,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:09:43,696 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b [2021-11-23 02:09:44,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:09:44,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:09:44,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:09:44,055 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:09:44,056 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:09:44,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2021-11-23 02:09:44,137 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/data/cc92967a7/cd08f9e59b83435e90b3b7b16193feff/FLAG25626a3a0 [2021-11-23 02:09:44,784 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:09:44,784 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2021-11-23 02:09:44,801 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/data/cc92967a7/cd08f9e59b83435e90b3b7b16193feff/FLAG25626a3a0 [2021-11-23 02:09:45,071 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/data/cc92967a7/cd08f9e59b83435e90b3b7b16193feff [2021-11-23 02:09:45,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:09:45,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:09:45,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:09:45,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:09:45,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:09:45,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:45,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9d8b81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45, skipping insertion in model container [2021-11-23 02:09:45,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:45,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:09:45,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:09:45,724 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2021-11-23 02:09:45,733 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2021-11-23 02:09:45,738 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2021-11-23 02:09:45,741 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2021-11-23 02:09:45,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:09:45,768 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:09:45,833 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2021-11-23 02:09:45,835 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2021-11-23 02:09:45,837 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2021-11-23 02:09:45,838 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2021-11-23 02:09:45,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:09:45,880 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:09:45,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45 WrapperNode [2021-11-23 02:09:45,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:09:45,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:09:45,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:09:45,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:09:45,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:45,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:45,946 INFO L137 Inliner]: procedures = 119, calls = 32, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2021-11-23 02:09:45,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:09:45,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:09:45,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:09:45,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:09:45,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:45,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:45,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:45,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:45,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:45,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:45,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:46,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:09:46,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:09:46,010 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:09:46,010 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:09:46,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (1/1) ... [2021-11-23 02:09:46,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:09:46,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:09:46,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:09:46,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:09:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:09:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:09:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:09:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:09:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:09:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:09:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:09:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:09:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:09:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:09:46,268 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:09:46,270 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:09:46,634 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:09:46,731 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:09:46,732 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-23 02:09:46,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:09:46 BoogieIcfgContainer [2021-11-23 02:09:46,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:09:46,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:09:46,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:09:46,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:09:46,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:09:45" (1/3) ... [2021-11-23 02:09:46,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6314d0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:09:46, skipping insertion in model container [2021-11-23 02:09:46,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:45" (2/3) ... [2021-11-23 02:09:46,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6314d0de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:09:46, skipping insertion in model container [2021-11-23 02:09:46,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:09:46" (3/3) ... [2021-11-23 02:09:46,752 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-1.i [2021-11-23 02:09:46,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:09:46,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 02:09:46,831 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:09:46,839 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 [2021-11-23 02:09:46,839 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 02:09:46,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:46,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:09:46,861 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:46,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:09:46,862 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:09:46,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:46,868 INFO L85 PathProgramCache]: Analyzing trace with hash 153922345, now seen corresponding path program 1 times [2021-11-23 02:09:46,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:46,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978830484] [2021-11-23 02:09:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:46,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:47,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:47,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:47,096 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:47,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978830484] [2021-11-23 02:09:47,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978830484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:47,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:47,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:09:47,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395341481] [2021-11-23 02:09:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:47,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:09:47,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:47,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:09:47,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:09:47,150 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-11-23 02:09:47,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:47,268 INFO L93 Difference]: Finished difference Result 51 states and 81 transitions. [2021-11-23 02:09:47,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:09:47,275 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 [2021-11-23 02:09:47,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:47,286 INFO L225 Difference]: With dead ends: 51 [2021-11-23 02:09:47,286 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 02:09:47,290 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 [2021-11-23 02:09:47,299 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:47,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:09:47,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 02:09:47,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-23 02:09:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 24 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) [2021-11-23 02:09:47,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-23 02:09:47,369 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 5 [2021-11-23 02:09:47,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:47,370 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-23 02:09:47,370 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) [2021-11-23 02:09:47,371 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-23 02:09:47,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 02:09:47,371 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:47,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 02:09:47,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:09:47,372 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:09:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:47,379 INFO L85 PathProgramCache]: Analyzing trace with hash 464256366, now seen corresponding path program 1 times [2021-11-23 02:09:47,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:47,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017570181] [2021-11-23 02:09:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:47,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:47,536 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:47,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017570181] [2021-11-23 02:09:47,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017570181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:47,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:47,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:09:47,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429699345] [2021-11-23 02:09:47,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:47,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:47,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:47,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:47,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:47,547 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 4 states, 4 states have (on average 1.5) 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) [2021-11-23 02:09:47,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:47,660 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2021-11-23 02:09:47,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:47,665 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) 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 [2021-11-23 02:09:47,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:47,667 INFO L225 Difference]: With dead ends: 28 [2021-11-23 02:09:47,667 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 02:09:47,668 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 [2021-11-23 02:09:47,672 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:47,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:09:47,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 02:09:47,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-11-23 02:09:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2021-11-23 02:09:47,692 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 6 [2021-11-23 02:09:47,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:47,693 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2021-11-23 02:09:47,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) 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) [2021-11-23 02:09:47,696 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2021-11-23 02:09:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:09:47,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:47,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:47,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:09:47,698 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:09:47,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:47,700 INFO L85 PathProgramCache]: Analyzing trace with hash 870651803, now seen corresponding path program 1 times [2021-11-23 02:09:47,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:47,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735798137] [2021-11-23 02:09:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:47,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:47,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:47,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:47,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735798137] [2021-11-23 02:09:47,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735798137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:47,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:47,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 02:09:47,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435028322] [2021-11-23 02:09:47,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:47,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:09:47,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:47,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:09:47,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:09:47,822 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:48,212 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-11-23 02:09:48,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:09:48,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 02:09:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:48,215 INFO L225 Difference]: With dead ends: 48 [2021-11-23 02:09:48,215 INFO L226 Difference]: Without dead ends: 46 [2021-11-23 02:09:48,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:09:48,217 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:48,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 61 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:09:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-23 02:09:48,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2021-11-23 02:09:48,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 29 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) [2021-11-23 02:09:48,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-11-23 02:09:48,228 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 9 [2021-11-23 02:09:48,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:48,228 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-11-23 02:09:48,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:09:48,229 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-11-23 02:09:48,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:09:48,230 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:48,230 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:48,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:09:48,231 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:09:48,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:48,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1598018176, now seen corresponding path program 1 times [2021-11-23 02:09:48,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:09:48,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87477355] [2021-11-23 02:09:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:48,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:09:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:48,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:48,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:09:48,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87477355] [2021-11-23 02:09:48,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87477355] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:09:48,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267474402] [2021-11-23 02:09:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:48,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:09:48,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:09:48,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:09:48,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:09:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:48,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 02:09:48,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:48,729 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 [2021-11-23 02:09:48,746 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 [2021-11-23 02:09:49,612 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-23 02:09:49,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 395 treesize of output 383 [2021-11-23 02:09:49,804 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-11-23 02:09:49,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 383 treesize of output 371 [2021-11-23 02:09:50,038 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-23 02:09:50,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 508 treesize of output 514 [2021-11-23 02:09:50,845 INFO L354 Elim1Store]: treesize reduction 121, result has 26.7 percent of original size [2021-11-23 02:09:50,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 515 treesize of output 545 [2021-11-23 02:09:51,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:09:51,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:09:51,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:09:51,210 INFO L354 Elim1Store]: treesize reduction 108, result has 23.4 percent of original size [2021-11-23 02:09:51,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 531 treesize of output 528 [2021-11-23 02:09:51,349 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-23 02:09:51,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [576118492] [2021-11-23 02:09:51,380 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2021-11-23 02:09:51,380 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:09:51,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:09:51,395 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:09:51,396 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:09:51,472 FATAL L? ?]: Ignoring exception! java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@7791d46f 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.applyEliminationToAtom(QuantifierPusher.java:311) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:145) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) 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:119) 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) [2021-11-23 02:09:51,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:09:51,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-11-23 02:09:51,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487564769] [2021-11-23 02:09:51,476 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-23 02:09:51,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:09:51,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:09:51,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:09:51,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:09:51,484 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-11-23 02:09:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:09:51,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:09:51,490 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 [2021-11-23 02:09:51,492 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] [2021-11-23 02:09:51,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:51,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:09:51,712 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@7791d46f 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:360) 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$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:455) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:103) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$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) [2021-11-23 02:09:51,715 INFO L158 Benchmark]: Toolchain (without parser) took 6631.43ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 69.6MB in the beginning and 107.0MB in the end (delta: -37.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:09:51,716 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:09:51,716 INFO L158 Benchmark]: CACSL2BoogieTranslator took 793.79ms. Allocated memory is still 113.2MB. Free memory was 69.4MB in the beginning and 78.6MB in the end (delta: -9.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2021-11-23 02:09:51,717 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.01ms. Allocated memory is still 113.2MB. Free memory was 78.6MB in the beginning and 76.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:09:51,717 INFO L158 Benchmark]: Boogie Preprocessor took 61.55ms. Allocated memory is still 113.2MB. Free memory was 76.6MB in the beginning and 75.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:09:51,718 INFO L158 Benchmark]: RCFGBuilder took 725.48ms. Allocated memory is still 113.2MB. Free memory was 74.8MB in the beginning and 57.7MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-23 02:09:51,718 INFO L158 Benchmark]: TraceAbstraction took 4973.05ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 57.0MB in the beginning and 107.0MB in the end (delta: -49.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:09:51,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 113.2MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 793.79ms. Allocated memory is still 113.2MB. Free memory was 69.4MB in the beginning and 78.6MB in the end (delta: -9.2MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.01ms. Allocated memory is still 113.2MB. Free memory was 78.6MB in the beginning and 76.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.55ms. Allocated memory is still 113.2MB. Free memory was 76.6MB in the beginning and 75.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 725.48ms. Allocated memory is still 113.2MB. Free memory was 74.8MB in the beginning and 57.7MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4973.05ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 57.0MB in the beginning and 107.0MB in the end (delta: -49.9MB). There was no memory consumed. 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@7791d46f de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@7791d46f: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 02:09:51,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V --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 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:09:54,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:09:54,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:09:54,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:09:54,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:09:54,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:09:54,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:09:54,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:09:54,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:09:54,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:09:54,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:09:54,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:09:54,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:09:54,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:09:54,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:09:54,738 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:09:54,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:09:54,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:09:54,744 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:09:54,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:09:54,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:09:54,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:09:54,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:09:54,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:09:54,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:09:54,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:09:54,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:09:54,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:09:54,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:09:54,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:09:54,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:09:54,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:09:54,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:09:54,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:09:54,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:09:54,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:09:54,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:09:54,802 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:09:54,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:09:54,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:09:54,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:09:54,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 02:09:54,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:09:54,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:09:54,868 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:09:54,868 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:09:54,870 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:09:54,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:09:54,870 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:09:54,871 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:09:54,871 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:09:54,871 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:09:54,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:09:54,873 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:09:54,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:09:54,876 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:09:54,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:09:54,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:09:54,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:09:54,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:09:54,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:09:54,878 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:09:54,878 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:09:54,878 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:09:54,878 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:09:54,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:09:54,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:09:54,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:09:54,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:09:54,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:09:54,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:09:54,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:09:54,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:09:54,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:09:54,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:09:54,883 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:09:54,883 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:09:54,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:09:54,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:09:54,884 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:09:54,884 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6070ac475d5b3c3d5905eb0c203232134efabc1c427fcfbbf8cf82789693617b [2021-11-23 02:09:55,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:09:55,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:09:55,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:09:55,430 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:09:55,431 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:09:55,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2021-11-23 02:09:55,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/data/87b964dc2/9ba995b4ff3849288e252b911f74b280/FLAGd1f19102c [2021-11-23 02:09:56,322 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:09:56,323 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i [2021-11-23 02:09:56,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/data/87b964dc2/9ba995b4ff3849288e252b911f74b280/FLAGd1f19102c [2021-11-23 02:09:56,552 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/data/87b964dc2/9ba995b4ff3849288e252b911f74b280 [2021-11-23 02:09:56,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:09:56,559 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:09:56,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:09:56,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:09:56,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:09:56,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:09:56" (1/1) ... [2021-11-23 02:09:56,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@543f6d32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:56, skipping insertion in model container [2021-11-23 02:09:56,574 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:09:56" (1/1) ... [2021-11-23 02:09:56,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:09:56,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:09:57,212 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2021-11-23 02:09:57,221 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2021-11-23 02:09:57,232 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2021-11-23 02:09:57,236 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2021-11-23 02:09:57,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:09:57,275 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:09:57,357 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22480,22493] [2021-11-23 02:09:57,362 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22552,22565] [2021-11-23 02:09:57,366 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22704,22717] [2021-11-23 02:09:57,368 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_1397bc05-23b2-4a7f-bc2a-12034a823a9c/sv-benchmarks/c/forester-heap/sll-rb-cnstr_1-1.i[22778,22791] [2021-11-23 02:09:57,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:09:57,430 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:09:57,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57 WrapperNode [2021-11-23 02:09:57,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:09:57,433 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:09:57,433 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:09:57,434 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:09:57,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (1/1) ... [2021-11-23 02:09:57,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (1/1) ... [2021-11-23 02:09:57,519 INFO L137 Inliner]: procedures = 122, calls = 32, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 115 [2021-11-23 02:09:57,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:09:57,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:09:57,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:09:57,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:09:57,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (1/1) ... [2021-11-23 02:09:57,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (1/1) ... [2021-11-23 02:09:57,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (1/1) ... [2021-11-23 02:09:57,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (1/1) ... [2021-11-23 02:09:57,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (1/1) ... [2021-11-23 02:09:57,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (1/1) ... [2021-11-23 02:09:57,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (1/1) ... [2021-11-23 02:09:57,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:09:57,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:09:57,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:09:57,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:09:57,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (1/1) ... [2021-11-23 02:09:57,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:09:57,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:09:57,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:09:57,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:09:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:09:57,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:09:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:09:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:09:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:09:57,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:09:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:09:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:09:57,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:09:57,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:09:57,892 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:09:57,894 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:09:58,424 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:09:58,441 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:09:58,444 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-23 02:09:58,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:09:58 BoogieIcfgContainer [2021-11-23 02:09:58,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:09:58,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:09:58,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:09:58,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:09:58,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:09:56" (1/3) ... [2021-11-23 02:09:58,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6259eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:09:58, skipping insertion in model container [2021-11-23 02:09:58,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:57" (2/3) ... [2021-11-23 02:09:58,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6259eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:09:58, skipping insertion in model container [2021-11-23 02:09:58,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:09:58" (3/3) ... [2021-11-23 02:09:58,466 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-1.i [2021-11-23 02:09:58,480 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:09:58,481 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-23 02:09:58,550 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:09:58,559 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 [2021-11-23 02:09:58,560 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 02:09:58,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 31 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) [2021-11-23 02:09:58,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 02:09:58,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:58,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 02:09:58,590 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:09:58,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:58,597 INFO L85 PathProgramCache]: Analyzing trace with hash 889937798, now seen corresponding path program 1 times [2021-11-23 02:09:58,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:58,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620910514] [2021-11-23 02:09:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:58,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:58,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:58,619 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:58,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:09:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:58,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 02:09:58,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:58,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:58,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:58,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620910514] [2021-11-23 02:09:58,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620910514] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:58,845 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:58,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 02:09:58,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250751149] [2021-11-23 02:09:58,849 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:58,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:09:58,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:58,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:09:58,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:09:58,903 INFO L87 Difference]: Start difference. First operand has 32 states, 27 states have (on average 1.9259259259259258) internal successors, (52), 31 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) 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) [2021-11-23 02:09:58,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:58,932 INFO L93 Difference]: Finished difference Result 60 states and 97 transitions. [2021-11-23 02:09:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:09:58,935 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 [2021-11-23 02:09:58,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:58,945 INFO L225 Difference]: With dead ends: 60 [2021-11-23 02:09:58,945 INFO L226 Difference]: Without dead ends: 26 [2021-11-23 02:09:58,951 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 [2021-11-23 02:09:58,961 INFO L933 BasicCegarLoop]: 37 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, 37 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 [2021-11-23 02:09:58,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:09:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-23 02:09:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-11-23 02:09:59,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 25 states have internal predecessors, (29), 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) [2021-11-23 02:09:59,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-23 02:09:59,034 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 6 [2021-11-23 02:09:59,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:59,035 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-23 02:09:59,035 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) [2021-11-23 02:09:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-23 02:09:59,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 02:09:59,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:59,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 02:09:59,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:59,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:59,254 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:09:59,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:59,258 INFO L85 PathProgramCache]: Analyzing trace with hash 889639888, now seen corresponding path program 1 times [2021-11-23 02:09:59,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:59,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129362097] [2021-11-23 02:09:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:59,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:59,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:59,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:59,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:09:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:59,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:09:59,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:59,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:59,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:59,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:59,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129362097] [2021-11-23 02:09:59,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129362097] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:59,497 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:59,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-23 02:09:59,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357022050] [2021-11-23 02:09:59,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:59,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:59,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:59,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:59,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:09:59,503 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-11-23 02:09:59,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:59,700 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-11-23 02:09:59,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:59,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-11-23 02:09:59,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:59,702 INFO L225 Difference]: With dead ends: 29 [2021-11-23 02:09:59,703 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 02:09:59,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:09:59,705 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:59,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 27 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:09:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 02:09:59,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-11-23 02:09:59,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 23 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) [2021-11-23 02:09:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-11-23 02:09:59,713 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 6 [2021-11-23 02:09:59,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:59,714 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-11-23 02:09:59,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-11-23 02:09:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-11-23 02:09:59,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 02:09:59,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:59,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:59,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:59,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:59,929 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:09:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:59,929 INFO L85 PathProgramCache]: Analyzing trace with hash -977335784, now seen corresponding path program 1 times [2021-11-23 02:09:59,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:59,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [4376290] [2021-11-23 02:09:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:59,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:59,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:59,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:59,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:09:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:59,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:09:59,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:00,037 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 [2021-11-23 02:10:00,116 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 19 treesize of output 7 [2021-11-23 02:10:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:00,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:00,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:00,218 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:10:00,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [4376290] [2021-11-23 02:10:00,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [4376290] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:00,219 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:00,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-23 02:10:00,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153687037] [2021-11-23 02:10:00,220 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:00,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:10:00,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:00,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:10:00,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:10:00,222 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:00,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:00,639 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2021-11-23 02:10:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:10:00,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 02:10:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:00,644 INFO L225 Difference]: With dead ends: 48 [2021-11-23 02:10:00,644 INFO L226 Difference]: Without dead ends: 46 [2021-11-23 02:10:00,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 02:10:00,646 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:00,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 65 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 02:10:00,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-23 02:10:00,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2021-11-23 02:10:00,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 29 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) [2021-11-23 02:10:00,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-11-23 02:10:00,664 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 9 [2021-11-23 02:10:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:00,664 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-11-23 02:10:00,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:00,665 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-11-23 02:10:00,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:10:00,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:00,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:00,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:10:00,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:10:00,882 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:10:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:00,883 INFO L85 PathProgramCache]: Analyzing trace with hash -822388269, now seen corresponding path program 1 times [2021-11-23 02:10:00,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:10:00,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563170859] [2021-11-23 02:10:00,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:00,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:10:00,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:10:00,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:10:00,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:10:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:01,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 02:10:01,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:01,076 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 [2021-11-23 02:10:01,087 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 [2021-11-23 02:10:01,219 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:10:01,219 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 [2021-11-23 02:10:01,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:01,247 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 [2021-11-23 02:10:01,469 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-23 02:10:01,470 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 2 case distinctions, treesize of input 60 treesize of output 52 [2021-11-23 02:10:01,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:01,551 INFO L354 Elim1Store]: treesize reduction 41, result has 31.7 percent of original size [2021-11-23 02:10:01,551 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 49 treesize of output 50 [2021-11-23 02:10:01,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:10:01,651 INFO L354 Elim1Store]: treesize reduction 56, result has 32.5 percent of original size [2021-11-23 02:10:01,652 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 54 [2021-11-23 02:10:02,974 INFO L354 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2021-11-23 02:10:02,974 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 39 treesize of output 33 [2021-11-23 02:10:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:03,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:05,170 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_33| (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~end~0#1.offset|) ~unnamed1~0~RED) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_3)))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_33| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_33|) (_ bv0 32) v_DerPreprocessor_2) (_ bv4 32) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-11-23 02:10:07,304 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_33| (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_33| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_34| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_5)))) (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_34| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_34|) |v_ULTIMATE.start_main_~end~0#1.offset_33| v_DerPreprocessor_4) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_33|) ~unnamed1~0~RED) |v_ULTIMATE.start_main_~end~0#1.offset_33| v_DerPreprocessor_3))))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_33| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_33|) (_ bv0 32) v_DerPreprocessor_2) (_ bv4 32) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_34|)))))) is different from false [2021-11-23 02:10:07,408 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 162 treesize of output 160 [2021-11-23 02:10:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:10:07,447 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:10:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563170859] [2021-11-23 02:10:07,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563170859] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:10:07,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1101196470] [2021-11-23 02:10:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:07,458 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:10:07,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:10:07,464 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:10:07,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-23 02:10:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:07,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-23 02:10:07,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:07,682 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 [2021-11-23 02:10:07,724 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 [2021-11-23 02:10:07,770 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:10:07,773 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 [2021-11-23 02:10:07,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:07,798 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 [2021-11-23 02:10:07,982 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-23 02:10:07,983 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 2 case distinctions, treesize of input 60 treesize of output 52 [2021-11-23 02:10:07,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:08,070 INFO L354 Elim1Store]: treesize reduction 41, result has 31.7 percent of original size [2021-11-23 02:10:08,070 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 49 treesize of output 50 [2021-11-23 02:10:08,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:10:08,173 INFO L354 Elim1Store]: treesize reduction 56, result has 32.5 percent of original size [2021-11-23 02:10:08,174 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 54 [2021-11-23 02:10:09,358 INFO L354 Elim1Store]: treesize reduction 25, result has 32.4 percent of original size [2021-11-23 02:10:09,359 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 39 treesize of output 33 [2021-11-23 02:10:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:09,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:11,466 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_40| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~end~0#1.offset|) ~unnamed1~0~RED) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_7)))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_40| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_40|) (_ bv0 32) v_DerPreprocessor_8) (_ bv4 32) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK)) is different from false [2021-11-23 02:10:13,598 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_40| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_41| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_39| (_ BitVec 32)) (v_DerPreprocessor_10 (_ BitVec 32)) (v_DerPreprocessor_9 (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_41|)))))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_10)))) (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_41| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_41|) |v_ULTIMATE.start_main_~end~0#1.offset_39| v_DerPreprocessor_9) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_39|) ~unnamed1~0~RED) |v_ULTIMATE.start_main_~end~0#1.offset_39| v_DerPreprocessor_7))))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_40| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_40|) (_ bv0 32) v_DerPreprocessor_8) (_ bv4 32) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 02:10:13,935 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 1267 treesize of output 1265 [2021-11-23 02:10:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:10:15,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1101196470] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:10:15,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61229574] [2021-11-23 02:10:15,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:15,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:10:15,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:10:15,436 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:10:15,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:10:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:15,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 02:10:15,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:15,557 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 [2021-11-23 02:10:15,579 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 [2021-11-23 02:10:15,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:15,728 INFO L354 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2021-11-23 02:10:15,729 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 [2021-11-23 02:10:15,812 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:10:15,813 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 26 treesize of output 33 [2021-11-23 02:10:16,172 INFO L354 Elim1Store]: treesize reduction 102, result has 15.7 percent of original size [2021-11-23 02:10:16,173 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 2 case distinctions, treesize of input 99 treesize of output 91 [2021-11-23 02:10:16,323 INFO L354 Elim1Store]: treesize reduction 184, result has 12.4 percent of original size [2021-11-23 02:10:16,323 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 76 treesize of output 82 [2021-11-23 02:10:16,380 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-23 02:10:16,381 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 69 treesize of output 71 [2021-11-23 02:10:17,449 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-23 02:10:17,450 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 [2021-11-23 02:10:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:17,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:19,580 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.offset_45| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_47|)))))))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~end~0#1.offset|) ~unnamed1~0~RED) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_14)))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_47| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_47|) |v_ULTIMATE.start_main_~end~0#1.offset_45| v_DerPreprocessor_13) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_45|) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 02:10:21,890 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.offset_46| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_45| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_48| (_ BitVec 32)) (v_DerPreprocessor_15 (_ BitVec 32)) (v_DerPreprocessor_16 (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_16)))) (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_48| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_48|) |v_ULTIMATE.start_main_~end~0#1.offset_46| v_DerPreprocessor_15) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_46|) ~unnamed1~0~RED) |v_ULTIMATE.start_main_~end~0#1.offset_46| v_DerPreprocessor_14))))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_47| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_47|) |v_ULTIMATE.start_main_~end~0#1.offset_45| v_DerPreprocessor_13) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_45|) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_48|))) (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_48| (_ bv1 1)) |v_ULTIMATE.start_main_~end~0#1.base_47|))))))))))) is different from false [2021-11-23 02:10:24,876 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 02:10:24,877 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 23882 treesize of output 1 [2021-11-23 02:10:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:10:24,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61229574] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:10:24,881 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:10:24,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 18 [2021-11-23 02:10:24,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712496042] [2021-11-23 02:10:24,882 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:10:24,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 02:10:24,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:24,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 02:10:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=106, Unknown=6, NotChecked=150, Total=306 [2021-11-23 02:10:24,885 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:27,094 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~end~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~end~0#1.offset_45| (_ BitVec 32)) (v_DerPreprocessor_13 (_ BitVec 32)) (v_DerPreprocessor_14 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_47| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_47|)))))))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~end~0#1.offset|) ~unnamed1~0~RED) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_14)))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_47| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_47|) |v_ULTIMATE.start_main_~end~0#1.offset_45| v_DerPreprocessor_13) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_45|) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) (forall ((v_DerPreprocessor_3 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_33| (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~end~0#1.offset|) ~unnamed1~0~RED) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_3)))) (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_33| (store (store (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_33|) (_ bv0 32) v_DerPreprocessor_2) (_ bv4 32) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_40| (_ BitVec 32)) (v_DerPreprocessor_8 (_ BitVec 32))) (= (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~end~0#1.offset|) ~unnamed1~0~RED) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_7)))) (store .cse2 |v_ULTIMATE.start_main_~end~0#1.base_40| (store (store (select .cse2 |v_ULTIMATE.start_main_~end~0#1.base_40|) (_ bv0 32) v_DerPreprocessor_8) (_ bv4 32) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)) ~unnamed1~0~BLACK)) (exists ((v_arrayElimCell_27 (_ BitVec 1))) (let ((.cse3 (bvneg (bvneg v_arrayElimCell_27)))) (and (= (_ bv0 1) (bvadd (bvneg (bvneg .cse3)) (_ bv1 1))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~list~0#1.base|)) .cse3))))) (= (_ bv0 1) (bvadd (bvneg (select |c_#valid| |c_ULTIMATE.start_main_~end~0#1.base|)) (_ bv1 1))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (= ~unnamed1~0~BLACK (select (select |c_#memory_int| |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-11-23 02:10:27,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:27,142 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2021-11-23 02:10:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:10:27,144 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 02:10:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:27,145 INFO L225 Difference]: With dead ends: 39 [2021-11-23 02:10:27,145 INFO L226 Difference]: Without dead ends: 37 [2021-11-23 02:10:27,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=46, Invalid=107, Unknown=7, NotChecked=182, Total=342 [2021-11-23 02:10:27,148 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:27,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 178 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 126 Unchecked, 0.1s Time] [2021-11-23 02:10:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-23 02:10:27,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2021-11-23 02:10:27,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 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) [2021-11-23 02:10:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-11-23 02:10:27,156 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2021-11-23 02:10:27,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:27,157 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-11-23 02:10:27,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:27,158 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-11-23 02:10:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:10:27,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:27,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:27,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:10:27,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:10:27,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-23 02:10:27,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:10:27,763 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:10:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash -13041643, now seen corresponding path program 1 times [2021-11-23 02:10:27,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:10:27,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588656700] [2021-11-23 02:10:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:27,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:10:27,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:10:27,767 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:10:27,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 02:10:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:27,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 02:10:27,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:27,890 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 [2021-11-23 02:10:27,910 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 [2021-11-23 02:10:27,992 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:10:27,993 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 [2021-11-23 02:10:28,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:28,020 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 [2021-11-23 02:10:28,110 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 02:10:28,111 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 27 treesize of output 26 [2021-11-23 02:10:28,400 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:10:28,401 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 28 treesize of output 14 [2021-11-23 02:10:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:28,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:30,696 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_19 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_53| (_ BitVec 32)) (v_DerPreprocessor_18 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_51| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_53|))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_19)))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_53| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_53|) |v_ULTIMATE.start_main_~end~0#1.offset_51| v_DerPreprocessor_18) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_51|) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 02:10:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:10:30,714 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:10:30,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588656700] [2021-11-23 02:10:30,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588656700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:10:30,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1507610390] [2021-11-23 02:10:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:30,715 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:10:30,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:10:30,728 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:10:30,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-23 02:10:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:30,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 02:10:30,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:30,856 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 [2021-11-23 02:10:30,878 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 [2021-11-23 02:10:30,911 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:10:30,912 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 19 treesize of output 19 [2021-11-23 02:10:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:30,933 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 [2021-11-23 02:10:30,983 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 02:10:30,984 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 27 treesize of output 26 [2021-11-23 02:10:31,198 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:10:31,198 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 14 [2021-11-23 02:10:31,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:31,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:33,327 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.offset_56| (_ BitVec 32)) (v_DerPreprocessor_21 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_58| (_ BitVec 32)) (v_DerPreprocessor_22 (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_58|))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_22)))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_58| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_58|) |v_ULTIMATE.start_main_~end~0#1.offset_56| v_DerPreprocessor_21) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_56|) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 02:10:33,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:10:33,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1507610390] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:10:33,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010953017] [2021-11-23 02:10:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:33,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:10:33,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:10:33,365 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:10:33,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 02:10:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:33,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 02:10:33,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:33,465 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 [2021-11-23 02:10:33,478 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 [2021-11-23 02:10:33,522 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-23 02:10:33,522 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 [2021-11-23 02:10:33,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:33,549 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 [2021-11-23 02:10:33,601 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-23 02:10:33,602 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 27 treesize of output 26 [2021-11-23 02:10:33,842 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-23 02:10:33,842 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 28 treesize of output 14 [2021-11-23 02:10:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:33,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:35,968 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_63| (_ BitVec 32)) (v_DerPreprocessor_24 (_ BitVec 32)) (v_DerPreprocessor_25 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_61| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_63|)))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_25)))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_63| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_63|) |v_ULTIMATE.start_main_~end~0#1.offset_61| v_DerPreprocessor_24) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_61|) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 02:10:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 02:10:35,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010953017] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:10:35,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:10:35,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 7] total 13 [2021-11-23 02:10:35,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042605702] [2021-11-23 02:10:35,990 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:10:35,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-23 02:10:35,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:35,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-23 02:10:35,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=67, Unknown=3, NotChecked=54, Total=156 [2021-11-23 02:10:35,993 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:36,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:36,782 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2021-11-23 02:10:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:10:36,783 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 02:10:36,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:36,785 INFO L225 Difference]: With dead ends: 49 [2021-11-23 02:10:36,785 INFO L226 Difference]: Without dead ends: 47 [2021-11-23 02:10:36,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=43, Invalid=98, Unknown=3, NotChecked=66, Total=210 [2021-11-23 02:10:36,787 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 118 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:36,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 136 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 118 Unchecked, 0.6s Time] [2021-11-23 02:10:36,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-23 02:10:36,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32. [2021-11-23 02:10:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 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) [2021-11-23 02:10:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-11-23 02:10:36,796 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2021-11-23 02:10:36,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:36,796 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-11-23 02:10:36,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 13 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:36,797 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-11-23 02:10:36,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:10:36,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:36,798 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:36,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-23 02:10:37,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:10:37,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:10:37,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:10:37,421 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:10:37,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:37,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1674631615, now seen corresponding path program 1 times [2021-11-23 02:10:37,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:10:37,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476537201] [2021-11-23 02:10:37,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:10:37,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:10:37,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:10:37,425 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:10:37,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 02:10:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:10:37,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:10:37,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:37,484 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 [2021-11-23 02:10:37,566 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 19 treesize of output 7 [2021-11-23 02:10:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:37,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:37,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:10:37,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476537201] [2021-11-23 02:10:37,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476537201] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:10:37,734 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:10:37,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 02:10:37,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093290718] [2021-11-23 02:10:37,734 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:10:37,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:10:37,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:37,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:10:37,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:10:37,736 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:38,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:10:38,323 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2021-11-23 02:10:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:10:38,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 02:10:38,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:10:38,326 INFO L225 Difference]: With dead ends: 65 [2021-11-23 02:10:38,326 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 02:10:38,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:10:38,328 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 25 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:10:38,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 110 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 02:10:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 02:10:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 40. [2021-11-23 02:10:38,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2021-11-23 02:10:38,340 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2021-11-23 02:10:38,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:10:38,341 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2021-11-23 02:10:38,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 02:10:38,341 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2021-11-23 02:10:38,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 02:10:38,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:10:38,343 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:10:38,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:10:38,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:10:38,556 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-23 02:10:38,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:10:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash 2053285582, now seen corresponding path program 2 times [2021-11-23 02:10:38,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:10:38,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528933255] [2021-11-23 02:10:38,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:10:38,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:10:38,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:10:38,559 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:10:38,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1397bc05-23b2-4a7f-bc2a-12034a823a9c/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:10:38,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:10:38,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:10:38,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 02:10:38,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:38,777 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 [2021-11-23 02:10:38,806 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 [2021-11-23 02:10:38,886 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-23 02:10:38,887 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 [2021-11-23 02:10:38,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:38,917 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 [2021-11-23 02:10:39,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:39,211 INFO L354 Elim1Store]: treesize reduction 380, result has 8.0 percent of original size [2021-11-23 02:10:39,211 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 4 case distinctions, treesize of input 91 treesize of output 84 [2021-11-23 02:10:39,320 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-23 02:10:39,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 84 [2021-11-23 02:10:39,736 INFO L354 Elim1Store]: treesize reduction 284, result has 11.0 percent of original size [2021-11-23 02:10:39,737 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 3 new quantified variables, introduced 7 case distinctions, treesize of input 114 treesize of output 99 [2021-11-23 02:10:39,799 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-23 02:10:39,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 83 treesize of output 87 [2021-11-23 02:10:40,419 INFO L354 Elim1Store]: treesize reduction 302, result has 10.9 percent of original size [2021-11-23 02:10:40,419 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 3 new quantified variables, introduced 7 case distinctions, treesize of input 98 treesize of output 96 [2021-11-23 02:10:40,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:10:40,680 INFO L354 Elim1Store]: treesize reduction 168, result has 25.7 percent of original size [2021-11-23 02:10:40,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 87 treesize of output 114 [2021-11-23 02:10:40,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 02:10:40,920 INFO L354 Elim1Store]: treesize reduction 188, result has 22.0 percent of original size [2021-11-23 02:10:40,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 102 treesize of output 126 [2021-11-23 02:10:55,549 INFO L354 Elim1Store]: treesize reduction 108, result has 23.4 percent of original size [2021-11-23 02:10:55,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 85 treesize of output 87 [2021-11-23 02:10:55,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:55,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:57,822 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_74| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~end~0#1.offset|) ~unnamed1~0~RED) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_30)))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_74| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_74|) (_ bv0 32) v_DerPreprocessor_31) (_ bv4 32) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|)))) is different from false [2021-11-23 02:10:59,917 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_74| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_72| (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_75| (_ BitVec 32))) (or (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_33)))) (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_75| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_75|) |v_ULTIMATE.start_main_~end~0#1.offset_72| v_DerPreprocessor_32) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_72|) ~unnamed1~0~RED) |v_ULTIMATE.start_main_~end~0#1.offset_72| v_DerPreprocessor_30))))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_74| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_74|) (_ bv0 32) v_DerPreprocessor_31) (_ bv4 32) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_75|))))) is different from false [2021-11-23 02:11:02,384 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_74| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_72| (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_75| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_76| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_73| (_ BitVec 32))) (or (not (= (_ bv0 1) (bvneg (select (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_76| (_ bv1 1)) |v_ULTIMATE.start_main_~end~0#1.base_75|)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_76|)))) (= ~unnamed1~0~BLACK (select (select (let ((.cse0 (let ((.cse1 (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~end~0#1.offset|) ~unnamed1~0~RED) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_35)))) (store .cse2 |v_ULTIMATE.start_main_~end~0#1.base_76| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~end~0#1.base_76|) |v_ULTIMATE.start_main_~end~0#1.offset_73| v_DerPreprocessor_34) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_73|) ~unnamed1~0~BLACK) |v_ULTIMATE.start_main_~end~0#1.offset_73| v_DerPreprocessor_33))))) (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_75| (store (store (store (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_75|) |v_ULTIMATE.start_main_~end~0#1.offset_72| v_DerPreprocessor_32) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_72|) ~unnamed1~0~RED) |v_ULTIMATE.start_main_~end~0#1.offset_72| v_DerPreprocessor_30))))) (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_74| (store (store (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_74|) (_ bv0 32) v_DerPreprocessor_31) (_ bv4 32) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2021-11-23 02:11:05,485 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~end~0#1.base_74| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_72| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_73| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.offset_74| (_ BitVec 32)) (v_DerPreprocessor_31 (_ BitVec 32)) (v_DerPreprocessor_32 (_ BitVec 32)) (v_DerPreprocessor_30 (_ BitVec 32)) (v_DerPreprocessor_35 (_ BitVec 32)) (v_DerPreprocessor_36 (_ BitVec 32)) (v_DerPreprocessor_33 (_ BitVec 32)) (v_DerPreprocessor_34 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_75| (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_76| (_ BitVec 32)) (v_DerPreprocessor_37 (_ BitVec 32)) (|v_ULTIMATE.start_main_~end~0#1.base_77| (_ BitVec 32))) (let ((.cse0 (store |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_77| (_ bv1 1)))) (or (not (= (_ bv0 1) (bvneg (bvneg (select .cse0 |v_ULTIMATE.start_main_~end~0#1.base_76|))))) (not (= (_ bv0 1) (bvneg (select (store .cse0 |v_ULTIMATE.start_main_~end~0#1.base_76| (_ bv1 1)) |v_ULTIMATE.start_main_~end~0#1.base_75|)))) (= ~unnamed1~0~BLACK (select (select (let ((.cse1 (let ((.cse2 (let ((.cse3 (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| v_DerPreprocessor_37)))) (store .cse4 |v_ULTIMATE.start_main_~end~0#1.base_77| (store (store (store (select .cse4 |v_ULTIMATE.start_main_~end~0#1.base_77|) |v_ULTIMATE.start_main_~end~0#1.offset_74| v_DerPreprocessor_36) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_74|) ~unnamed1~0~RED) |v_ULTIMATE.start_main_~end~0#1.offset_74| v_DerPreprocessor_35))))) (store .cse3 |v_ULTIMATE.start_main_~end~0#1.base_76| (store (store (store (select .cse3 |v_ULTIMATE.start_main_~end~0#1.base_76|) |v_ULTIMATE.start_main_~end~0#1.offset_73| v_DerPreprocessor_34) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_73|) ~unnamed1~0~BLACK) |v_ULTIMATE.start_main_~end~0#1.offset_73| v_DerPreprocessor_33))))) (store .cse2 |v_ULTIMATE.start_main_~end~0#1.base_75| (store (store (store (select .cse2 |v_ULTIMATE.start_main_~end~0#1.base_75|) |v_ULTIMATE.start_main_~end~0#1.offset_72| v_DerPreprocessor_32) (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~end~0#1.offset_72|) ~unnamed1~0~RED) |v_ULTIMATE.start_main_~end~0#1.offset_72| v_DerPreprocessor_30))))) (store .cse1 |v_ULTIMATE.start_main_~end~0#1.base_74| (store (store (select .cse1 |v_ULTIMATE.start_main_~end~0#1.base_74|) (_ bv0 32) v_DerPreprocessor_31) (_ bv4 32) ~unnamed1~0~BLACK))) |c_ULTIMATE.start_main_~list~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~end~0#1.base_77|)))))) is different from false