./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/forester-heap/sll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/forester-heap/sll-token-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 10f8c5ed101296da8e76853e36294f37ed1d85898917b59e645db1ac667d60a8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:32:31,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:32:31,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:32:31,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:32:31,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:32:31,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:32:31,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:32:31,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:32:31,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:32:31,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:32:31,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:32:31,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:32:31,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:32:31,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:32:31,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:32:31,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:32:31,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:32:31,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:32:31,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:32:31,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:32:31,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:32:31,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:32:31,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:32:31,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:32:31,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:32:31,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:32:31,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:32:31,623 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:32:31,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:32:31,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:32:31,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:32:31,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:32:31,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:32:31,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:32:31,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:32:31,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:32:31,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:32:31,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:32:31,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:32:31,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:32:31,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:32:31,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-20 23:32:31,680 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:32:31,681 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:32:31,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:32:31,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:32:31,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:32:31,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:32:31,689 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:32:31,690 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:32:31,690 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:32:31,690 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:32:31,691 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:32:31,691 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:32:31,692 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:32:31,692 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:32:31,692 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:32:31,692 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:32:31,693 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:32:31,693 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:32:31,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:32:31,695 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:32:31,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:32:31,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:32:31,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:32:31,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:32:31,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:32:31,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:32:31,698 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:32:31,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:32:31,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:32:31,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:32:31,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:32:31,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:32:31,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:31,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:32:31,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:32:31,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:32:31,701 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:32:31,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:32:31,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:32:31,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:32:31,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:32:31,702 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_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f8c5ed101296da8e76853e36294f37ed1d85898917b59e645db1ac667d60a8 [2021-11-20 23:32:32,035 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:32:32,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:32:32,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:32:32,080 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:32:32,081 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:32:32,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/forester-heap/sll-token-1.i [2021-11-20 23:32:32,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/data/f6f3437d6/6a57b14d924d413e90e566f5d82388fc/FLAGfd6a0debc [2021-11-20 23:32:32,772 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:32:32,773 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i [2021-11-20 23:32:32,793 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/data/f6f3437d6/6a57b14d924d413e90e566f5d82388fc/FLAGfd6a0debc [2021-11-20 23:32:33,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/data/f6f3437d6/6a57b14d924d413e90e566f5d82388fc [2021-11-20 23:32:33,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:32:33,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:32:33,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:33,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:32:33,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:32:33,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1168f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33, skipping insertion in model container [2021-11-20 23:32:33,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,062 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:32:33,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:32:33,381 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2021-11-20 23:32:33,386 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2021-11-20 23:32:33,387 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2021-11-20 23:32:33,389 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2021-11-20 23:32:33,390 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2021-11-20 23:32:33,392 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2021-11-20 23:32:33,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:33,402 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:32:33,448 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22162,22175] [2021-11-20 23:32:33,450 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22311,22324] [2021-11-20 23:32:33,451 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22402,22415] [2021-11-20 23:32:33,452 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22484,22497] [2021-11-20 23:32:33,453 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22562,22575] [2021-11-20 23:32:33,454 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_856d2797-6dd3-4441-989f-127bdf56ca63/sv-benchmarks/c/forester-heap/sll-token-1.i[22708,22721] [2021-11-20 23:32:33,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:32:33,488 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:32:33,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33 WrapperNode [2021-11-20 23:32:33,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:32:33,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:33,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:32:33,490 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:32:33,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,535 INFO L137 Inliner]: procedures = 119, calls = 31, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 123 [2021-11-20 23:32:33,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:32:33,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:32:33,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:32:33,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:32:33,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:32:33,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:32:33,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:32:33,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:32:33,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (1/1) ... [2021-11-20 23:32:33,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:32:33,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:32:33,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:32:33,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:32:33,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:32:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:32:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:32:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:32:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:32:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:32:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:32:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:32:33,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:32:33,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:32:33,739 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:32:33,741 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:32:34,005 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:32:34,022 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:32:34,022 INFO L301 CfgBuilder]: Removed 15 assume(true) statements. [2021-11-20 23:32:34,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:34 BoogieIcfgContainer [2021-11-20 23:32:34,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:32:34,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:32:34,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:32:34,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:32:34,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:32:33" (1/3) ... [2021-11-20 23:32:34,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5646ec47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:34, skipping insertion in model container [2021-11-20 23:32:34,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:32:33" (2/3) ... [2021-11-20 23:32:34,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5646ec47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:32:34, skipping insertion in model container [2021-11-20 23:32:34,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:34" (3/3) ... [2021-11-20 23:32:34,044 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2021-11-20 23:32:34,060 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:32:34,061 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-20 23:32:34,129 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:32:34,137 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 [2021-11-20 23:32:34,138 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-20 23:32:34,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:32:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 23:32:34,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:34,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 23:32:34,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 23:32:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:34,178 INFO L85 PathProgramCache]: Analyzing trace with hash 177379778, now seen corresponding path program 1 times [2021-11-20 23:32:34,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:34,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999401724] [2021-11-20 23:32:34,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:34,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:32:34,406 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:34,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999401724] [2021-11-20 23:32:34,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999401724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:34,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:34,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 23:32:34,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438504696] [2021-11-20 23:32:34,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:34,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 23:32:34,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:34,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 23:32:34,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 23:32:34,444 INFO L87 Difference]: Start difference. First operand has 41 states, 34 states have (on average 1.8823529411764706) internal successors, (64), 40 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-11-20 23:32:34,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:34,472 INFO L93 Difference]: Finished difference Result 81 states and 127 transitions. [2021-11-20 23:32:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 23:32:34,485 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 [2021-11-20 23:32:34,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:34,493 INFO L225 Difference]: With dead ends: 81 [2021-11-20 23:32:34,494 INFO L226 Difference]: Without dead ends: 38 [2021-11-20 23:32:34,497 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 [2021-11-20 23:32:34,501 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:34,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:32:34,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-20 23:32:34,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-20 23:32:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.25) internal successors, (40), 37 states have internal predecessors, (40), 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) [2021-11-20 23:32:34,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2021-11-20 23:32:34,548 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 5 [2021-11-20 23:32:34,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:34,549 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2021-11-20 23:32:34,550 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) [2021-11-20 23:32:34,550 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2021-11-20 23:32:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 23:32:34,551 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:34,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 23:32:34,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 23:32:34,552 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 23:32:34,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash 176613157, now seen corresponding path program 1 times [2021-11-20 23:32:34,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:34,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851015766] [2021-11-20 23:32:34,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:34,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:34,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:32:34,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:34,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851015766] [2021-11-20 23:32:34,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851015766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:34,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:34,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:34,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220681473] [2021-11-20 23:32:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:34,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:32:34,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:34,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:32:34,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:34,666 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:32:34,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:34,731 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2021-11-20 23:32:34,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:32:34,732 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-20 23:32:34,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:34,733 INFO L225 Difference]: With dead ends: 38 [2021-11-20 23:32:34,733 INFO L226 Difference]: Without dead ends: 36 [2021-11-20 23:32:34,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:32:34,735 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:34,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 53 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:32:34,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-20 23:32:34,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-20 23:32:34,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 35 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) [2021-11-20 23:32:34,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2021-11-20 23:32:34,742 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 5 [2021-11-20 23:32:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:34,742 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2021-11-20 23:32:34,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:32:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2021-11-20 23:32:34,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-20 23:32:34,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:34,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-20 23:32:34,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 23:32:34,744 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 23:32:34,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:34,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1179997057, now seen corresponding path program 1 times [2021-11-20 23:32:34,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:34,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970428420] [2021-11-20 23:32:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:34,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:32:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:32:34,815 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:32:34,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970428420] [2021-11-20 23:32:34,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970428420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:32:34,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:32:34,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 23:32:34,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462934828] [2021-11-20 23:32:34,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:32:34,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:32:34,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:32:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:32:34,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:32:34,826 INFO L87 Difference]: Start difference. First operand 36 states and 38 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) [2021-11-20 23:32:34,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:32:34,889 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2021-11-20 23:32:34,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:32:34,890 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 [2021-11-20 23:32:34,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:32:34,891 INFO L225 Difference]: With dead ends: 62 [2021-11-20 23:32:34,891 INFO L226 Difference]: Without dead ends: 60 [2021-11-20 23:32:34,892 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 [2021-11-20 23:32:34,893 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 72 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:32:34,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 44 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:32:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-20 23:32:34,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 34. [2021-11-20 23:32:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2) internal successors, (36), 33 states have internal predecessors, (36), 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) [2021-11-20 23:32:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2021-11-20 23:32:34,901 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 6 [2021-11-20 23:32:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:32:34,901 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2021-11-20 23:32:34,901 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) [2021-11-20 23:32:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2021-11-20 23:32:34,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 23:32:34,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:32:34,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:32:34,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 23:32:34,903 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-20 23:32:34,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:32:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash -941369743, now seen corresponding path program 1 times [2021-11-20 23:32:34,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:32:34,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054578522] [2021-11-20 23:32:34,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:32:34,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:32:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:32:34,941 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 23:32:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 23:32:35,013 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 23:32:35,014 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 23:32:35,015 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2021-11-20 23:32:35,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2021-11-20 23:32:35,017 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2021-11-20 23:32:35,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2021-11-20 23:32:35,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2021-11-20 23:32:35,018 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2021-11-20 23:32:35,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 23:32:35,023 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-20 23:32:35,026 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 23:32:35,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:32:35 BoogieIcfgContainer [2021-11-20 23:32:35,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 23:32:35,050 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 23:32:35,050 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 23:32:35,051 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 23:32:35,051 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:32:34" (3/4) ... [2021-11-20 23:32:35,054 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-20 23:32:35,087 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/witness.graphml [2021-11-20 23:32:35,088 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 23:32:35,088 INFO L158 Benchmark]: Toolchain (without parser) took 2043.71ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 60.4MB in the beginning and 81.9MB in the end (delta: -21.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:32:35,089 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:32:35,089 INFO L158 Benchmark]: CACSL2BoogieTranslator took 442.95ms. Allocated memory is still 94.4MB. Free memory was 60.2MB in the beginning and 62.7MB in the end (delta: -2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:32:35,089 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.29ms. Allocated memory is still 94.4MB. Free memory was 62.7MB in the beginning and 60.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:32:35,090 INFO L158 Benchmark]: Boogie Preprocessor took 31.83ms. Allocated memory is still 94.4MB. Free memory was 60.6MB in the beginning and 59.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:32:35,090 INFO L158 Benchmark]: RCFGBuilder took 456.80ms. Allocated memory is still 94.4MB. Free memory was 59.1MB in the beginning and 45.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 23:32:35,091 INFO L158 Benchmark]: TraceAbstraction took 1023.23ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 45.0MB in the beginning and 83.1MB in the end (delta: -38.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 23:32:35,091 INFO L158 Benchmark]: Witness Printer took 37.39ms. Allocated memory is still 113.2MB. Free memory was 83.1MB in the beginning and 81.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:32:35,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 94.4MB. Free memory was 49.0MB in the beginning and 49.0MB in the end (delta: 42.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 442.95ms. Allocated memory is still 94.4MB. Free memory was 60.2MB in the beginning and 62.7MB in the end (delta: -2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.29ms. Allocated memory is still 94.4MB. Free memory was 62.7MB in the beginning and 60.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.83ms. Allocated memory is still 94.4MB. Free memory was 60.6MB in the beginning and 59.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 456.80ms. Allocated memory is still 94.4MB. Free memory was 59.1MB in the beginning and 45.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1023.23ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 45.0MB in the beginning and 83.1MB in the end (delta: -38.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 37.39ms. Allocated memory is still 113.2MB. Free memory was 83.1MB in the beginning and 81.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1031]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); [L1004] head->next = ((void*)0) [L1005] head->data = 0 [L1007] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 [L1019] x->next = malloc(sizeof(SLL)) [L1020] EXPR x->next [L1020] x->next->data = 2 [L1022] x = head VAL [head={-1:0}, x={-1:0}] [L1024] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, x={-1:0}] [L1026] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data VAL [head={-1:0}, x={-1:0}, x->data=1] [L1031] COND TRUE !(2 == x->data) [L1031] reach_error() VAL [head={-1:0}, x={-1:0}] - UnprovableResult [Line: 1016]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1024]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1043]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 138 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 97 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 26 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-20 23:32:35,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_856d2797-6dd3-4441-989f-127bdf56ca63/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE