./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6a47aea7 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl --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 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:13:29,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:13:29,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:13:29,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:13:29,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:13:29,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:13:29,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:13:29,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:13:29,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:13:29,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:13:29,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:13:29,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:13:29,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:13:29,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:13:29,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:13:29,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:13:29,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:13:29,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:13:29,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:13:29,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:13:29,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:13:29,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:13:29,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:13:29,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:13:29,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:13:29,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:13:29,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:13:29,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:13:29,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:13:29,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:13:29,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:13:29,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:13:29,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:13:29,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:13:29,317 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:13:29,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:13:29,318 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:13:29,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:13:29,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:13:29,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:13:29,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:13:29,323 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 17:13:29,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:13:29,381 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:13:29,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:13:29,383 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:13:29,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:13:29,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:13:29,392 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:13:29,393 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:13:29,393 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:13:29,393 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 17:13:29,395 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:13:29,395 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:13:29,395 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 17:13:29,395 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 17:13:29,396 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:13:29,396 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 17:13:29,396 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 17:13:29,397 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 17:13:29,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:13:29,399 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:13:29,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 17:13:29,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:13:29,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:13:29,400 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:13:29,400 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:13:29,400 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:13:29,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:13:29,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:13:29,401 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:13:29,401 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:13:29,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:13:29,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:13:29,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:13:29,403 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:13:29,403 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:13:29,403 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:13:29,404 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 17:13:29,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 17:13:29,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:13:29,404 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:13:29,405 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:13:29,405 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2021-11-23 17:13:29,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:13:29,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:13:29,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:13:29,838 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:13:29,839 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:13:29,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-23 17:13:29,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/data/541d86a4e/1cde2e8ce49a4c0c88216ab132424f5c/FLAGe85826ce5 [2021-11-23 17:13:30,674 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:13:30,675 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-23 17:13:30,708 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/data/541d86a4e/1cde2e8ce49a4c0c88216ab132424f5c/FLAGe85826ce5 [2021-11-23 17:13:30,804 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/data/541d86a4e/1cde2e8ce49a4c0c88216ab132424f5c [2021-11-23 17:13:30,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:13:30,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:13:30,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:13:30,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:13:30,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:13:30,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:30" (1/1) ... [2021-11-23 17:13:30,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763a569b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:30, skipping insertion in model container [2021-11-23 17:13:30,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:30" (1/1) ... [2021-11-23 17:13:30,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:13:30,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:13:31,454 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-23 17:13:31,580 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-23 17:13:31,581 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-23 17:13:31,605 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:13:31,616 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:13:31,650 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-23 17:13:31,723 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-23 17:13:31,724 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-23 17:13:31,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:13:31,788 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:13:31,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31 WrapperNode [2021-11-23 17:13:31,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:13:31,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:13:31,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:13:31,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:13:31,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31" (1/1) ... [2021-11-23 17:13:31,842 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31" (1/1) ... [2021-11-23 17:13:31,948 INFO L137 Inliner]: procedures = 176, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-11-23 17:13:31,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:13:31,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:13:31,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:13:31,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:13:31,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31" (1/1) ... [2021-11-23 17:13:31,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31" (1/1) ... [2021-11-23 17:13:31,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31" (1/1) ... [2021-11-23 17:13:31,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31" (1/1) ... [2021-11-23 17:13:32,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31" (1/1) ... [2021-11-23 17:13:32,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31" (1/1) ... [2021-11-23 17:13:32,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31" (1/1) ... [2021-11-23 17:13:32,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:13:32,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:13:32,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:13:32,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:13:32,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:31" (1/1) ... [2021-11-23 17:13:32,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:13:32,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:13:32,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:13:32,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:13:32,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 17:13:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 17:13:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 17:13:32,205 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 17:13:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:13:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:13:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:13:32,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:13:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 17:13:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:13:32,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:13:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 17:13:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:13:32,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:13:32,497 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:13:32,514 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:13:33,738 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:13:33,781 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.addBranchEncoders(TransFormulaBuilder.java:170) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.parallelComposition(TransFormulaUtils.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.ParallelComposition.(ParallelComposition.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CodeBlockFactory.constructParallelComposition(CodeBlockFactory.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.composeParallel(CfgBuilder.java:1792) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder$LargeBlockEncoding.(CfgBuilder.java:1653) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.CfgBuilder.createIcfg(CfgBuilder.java:280) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBuilderObserver.process(RCFGBuilderObserver.java:88) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.DFSTreeWalker.runObserver(DFSTreeWalker.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.runObserver(BaseWalker.java:93) at de.uni_freiburg.informatik.ultimate.core.coreplugin.modelwalker.BaseWalker.run(BaseWalker.java:86) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 17:13:33,787 INFO L158 Benchmark]: Toolchain (without parser) took 2976.55ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 64.2MB in the beginning and 66.5MB in the end (delta: -2.3MB). Peak memory consumption was 51.0MB. Max. memory is 16.1GB. [2021-11-23 17:13:33,788 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 90.2MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:13:33,790 INFO L158 Benchmark]: CACSL2BoogieTranslator took 978.67ms. Allocated memory is still 90.2MB. Free memory was 64.0MB in the beginning and 39.7MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-23 17:13:33,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 158.97ms. Allocated memory is still 90.2MB. Free memory was 39.5MB in the beginning and 32.4MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:13:33,792 INFO L158 Benchmark]: Boogie Preprocessor took 158.29ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 32.2MB in the beginning and 96.2MB in the end (delta: -64.1MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2021-11-23 17:13:33,793 INFO L158 Benchmark]: RCFGBuilder took 1675.82ms. Allocated memory is still 130.0MB. Free memory was 95.6MB in the beginning and 66.5MB in the end (delta: 29.1MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. [2021-11-23 17:13:33,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 90.2MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 978.67ms. Allocated memory is still 90.2MB. Free memory was 64.0MB in the beginning and 39.7MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 158.97ms. Allocated memory is still 90.2MB. Free memory was 39.5MB in the beginning and 32.4MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 158.29ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 32.2MB in the beginning and 96.2MB in the end (delta: -64.1MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1675.82ms. Allocated memory is still 130.0MB. Free memory was 95.6MB in the beginning and 66.5MB in the end (delta: 29.1MB). Peak memory consumption was 44.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.addAll(ImmutableSet.java:313) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:13:33,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/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 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl --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 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc --- Real Ultimate output --- This is Ultimate 0.2.2-dev-6a47aea [2021-11-23 17:13:36,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 17:13:36,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 17:13:36,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 17:13:36,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 17:13:36,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 17:13:36,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 17:13:36,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 17:13:36,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 17:13:36,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 17:13:36,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 17:13:36,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 17:13:36,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 17:13:36,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 17:13:36,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 17:13:36,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 17:13:36,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 17:13:36,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 17:13:36,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 17:13:36,380 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 17:13:36,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 17:13:36,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 17:13:36,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 17:13:36,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 17:13:36,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 17:13:36,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 17:13:36,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 17:13:36,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 17:13:36,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 17:13:36,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 17:13:36,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 17:13:36,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 17:13:36,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 17:13:36,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 17:13:36,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 17:13:36,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 17:13:36,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 17:13:36,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 17:13:36,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 17:13:36,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 17:13:36,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 17:13:36,418 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-23 17:13:36,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 17:13:36,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 17:13:36,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 17:13:36,470 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 17:13:36,471 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 17:13:36,471 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 17:13:36,471 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 17:13:36,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 17:13:36,472 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 17:13:36,472 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 17:13:36,473 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 17:13:36,473 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 17:13:36,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 17:13:36,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 17:13:36,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 17:13:36,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 17:13:36,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 17:13:36,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 17:13:36,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 17:13:36,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 17:13:36,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 17:13:36,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 17:13:36,477 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 17:13:36,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 17:13:36,478 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 17:13:36,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 17:13:36,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 17:13:36,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 17:13:36,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 17:13:36,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:13:36,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 17:13:36,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 17:13:36,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 17:13:36,480 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 17:13:36,480 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 17:13:36,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 17:13:36,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 17:13:36,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 17:13:36,481 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e43379b3f2624d77eec1084820c7c07499f5ec4432514ab066d4f5cf96eeebc [2021-11-23 17:13:36,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 17:13:36,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 17:13:36,931 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 17:13:36,933 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 17:13:36,934 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 17:13:36,935 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-23 17:13:37,011 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/data/3c9052b3c/e019af121d6e4bc389366cf2346f0889/FLAG605c55882 [2021-11-23 17:13:37,686 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 17:13:37,687 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i [2021-11-23 17:13:37,704 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/data/3c9052b3c/e019af121d6e4bc389366cf2346f0889/FLAG605c55882 [2021-11-23 17:13:37,888 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/data/3c9052b3c/e019af121d6e4bc389366cf2346f0889 [2021-11-23 17:13:37,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 17:13:37,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 17:13:37,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 17:13:37,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 17:13:37,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 17:13:37,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:37" (1/1) ... [2021-11-23 17:13:37,907 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c01c5f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:37, skipping insertion in model container [2021-11-23 17:13:37,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 05:13:37" (1/1) ... [2021-11-23 17:13:37,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 17:13:38,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:13:38,487 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-23 17:13:38,647 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-23 17:13:38,648 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-23 17:13:38,666 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:13:38,680 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 17:13:38,703 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 17:13:38,724 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-23 17:13:38,806 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-23 17:13:38,806 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-23 17:13:38,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:13:38,820 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 17:13:38,845 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[33021,33034] [2021-11-23 17:13:38,885 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44124,44137] [2021-11-23 17:13:38,886 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_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test7-2.i[44245,44258] [2021-11-23 17:13:38,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 17:13:38,962 INFO L208 MainTranslator]: Completed translation [2021-11-23 17:13:38,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38 WrapperNode [2021-11-23 17:13:38,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 17:13:38,964 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 17:13:38,964 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 17:13:38,964 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 17:13:38,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (1/1) ... [2021-11-23 17:13:39,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (1/1) ... [2021-11-23 17:13:39,060 INFO L137 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1151 [2021-11-23 17:13:39,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 17:13:39,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 17:13:39,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 17:13:39,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 17:13:39,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (1/1) ... [2021-11-23 17:13:39,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (1/1) ... [2021-11-23 17:13:39,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (1/1) ... [2021-11-23 17:13:39,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (1/1) ... [2021-11-23 17:13:39,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (1/1) ... [2021-11-23 17:13:39,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (1/1) ... [2021-11-23 17:13:39,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (1/1) ... [2021-11-23 17:13:39,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 17:13:39,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 17:13:39,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 17:13:39,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 17:13:39,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (1/1) ... [2021-11-23 17:13:39,236 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 17:13:39,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/z3 [2021-11-23 17:13:39,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 17:13:39,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 17:13:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-23 17:13:39,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 17:13:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 17:13:39,310 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 17:13:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 17:13:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 17:13:39,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 17:13:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 17:13:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-23 17:13:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 17:13:39,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 17:13:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 17:13:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 17:13:39,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 17:13:39,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 17:13:39,659 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 17:13:39,661 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 17:13:47,186 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 17:13:47,198 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 17:13:47,200 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-23 17:13:47,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:13:47 BoogieIcfgContainer [2021-11-23 17:13:47,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 17:13:47,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 17:13:47,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 17:13:47,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 17:13:47,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 05:13:37" (1/3) ... [2021-11-23 17:13:47,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbe8642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:13:47, skipping insertion in model container [2021-11-23 17:13:47,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 05:13:38" (2/3) ... [2021-11-23 17:13:47,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbe8642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 05:13:47, skipping insertion in model container [2021-11-23 17:13:47,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 05:13:47" (3/3) ... [2021-11-23 17:13:47,213 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test7-2.i [2021-11-23 17:13:47,219 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 17:13:47,220 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 17:13:47,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 17:13:47,303 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 17:13:47,303 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 17:13:47,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 215 states, 208 states have (on average 1.6971153846153846) internal successors, (353), 210 states have internal predecessors, (353), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:13:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 17:13:47,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:47,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:47,344 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:13:47,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:47,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2094566776, now seen corresponding path program 1 times [2021-11-23 17:13:47,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:47,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [844342422] [2021-11-23 17:13:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:47,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:47,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:47,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:47,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 17:13:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:47,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 17:13:47,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:47,631 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 17:13:47,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:47,649 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:47,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [844342422] [2021-11-23 17:13:47,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [844342422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:47,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:47,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 17:13:47,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991580974] [2021-11-23 17:13:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:47,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 17:13:47,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:47,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 17:13:47,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 17:13:47,724 INFO L87 Difference]: Start difference. First operand has 215 states, 208 states have (on average 1.6971153846153846) internal successors, (353), 210 states have internal predecessors, (353), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:47,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:47,789 INFO L93 Difference]: Finished difference Result 427 states and 715 transitions. [2021-11-23 17:13:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 17:13:47,792 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 17:13:47,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:47,803 INFO L225 Difference]: With dead ends: 427 [2021-11-23 17:13:47,804 INFO L226 Difference]: Without dead ends: 181 [2021-11-23 17:13:47,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 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 17:13:47,812 INFO L933 BasicCegarLoop]: 280 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, 280 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 17:13:47,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 17:13:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-23 17:13:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-23 17:13:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 175 states have (on average 1.3142857142857143) internal successors, (230), 176 states have internal predecessors, (230), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:13:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 236 transitions. [2021-11-23 17:13:47,882 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 236 transitions. Word has length 8 [2021-11-23 17:13:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:47,883 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 236 transitions. [2021-11-23 17:13:47,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 17:13:47,884 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 236 transitions. [2021-11-23 17:13:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 17:13:47,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:47,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:47,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:48,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:48,101 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:13:48,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash -716312389, now seen corresponding path program 1 times [2021-11-23 17:13:48,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:48,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380281675] [2021-11-23 17:13:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:48,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:48,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:48,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:48,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 17:13:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:48,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 17:13:48,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:48,506 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 17:13:48,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:48,507 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:48,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380281675] [2021-11-23 17:13:48,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380281675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:48,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:48,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:13:48,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396110529] [2021-11-23 17:13:48,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:48,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:13:48,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:48,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:13:48,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:13:48,511 INFO L87 Difference]: Start difference. First operand 181 states and 236 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 17:13:50,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 17:13:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:53,371 INFO L93 Difference]: Finished difference Result 468 states and 614 transitions. [2021-11-23 17:13:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:13:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 17:13:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:53,378 INFO L225 Difference]: With dead ends: 468 [2021-11-23 17:13:53,379 INFO L226 Difference]: Without dead ends: 287 [2021-11-23 17:13:53,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 17:13:53,382 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 140 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:53,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 623 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 17:13:53,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-23 17:13:53,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 284. [2021-11-23 17:13:53,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 278 states have (on average 1.3201438848920863) internal successors, (367), 279 states have internal predecessors, (367), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:13:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 373 transitions. [2021-11-23 17:13:53,414 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 373 transitions. Word has length 10 [2021-11-23 17:13:53,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:53,415 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 373 transitions. [2021-11-23 17:13:53,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 17:13:53,415 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 373 transitions. [2021-11-23 17:13:53,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 17:13:53,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:53,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:53,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:53,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:53,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:13:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash -294024543, now seen corresponding path program 1 times [2021-11-23 17:13:53,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:53,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601473498] [2021-11-23 17:13:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:53,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:53,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:53,634 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:53,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 17:13:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:53,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 17:13:53,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:54,045 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 17:13:54,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:54,045 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:54,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601473498] [2021-11-23 17:13:54,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601473498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:54,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:54,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 17:13:54,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37880155] [2021-11-23 17:13:54,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:54,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:13:54,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:54,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:13:54,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:13:54,049 INFO L87 Difference]: Start difference. First operand 284 states and 373 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 17:13:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:54,208 INFO L93 Difference]: Finished difference Result 454 states and 597 transitions. [2021-11-23 17:13:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:13:54,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2021-11-23 17:13:54,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:54,211 INFO L225 Difference]: With dead ends: 454 [2021-11-23 17:13:54,211 INFO L226 Difference]: Without dead ends: 306 [2021-11-23 17:13:54,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:13:54,214 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 103 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:54,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 614 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 17:13:54,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-23 17:13:54,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 290. [2021-11-23 17:13:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 284 states have (on average 1.2570422535211268) internal successors, (357), 285 states have internal predecessors, (357), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:13:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 363 transitions. [2021-11-23 17:13:54,237 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 363 transitions. Word has length 44 [2021-11-23 17:13:54,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:54,237 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 363 transitions. [2021-11-23 17:13:54,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 17:13:54,238 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 363 transitions. [2021-11-23 17:13:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 17:13:54,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:54,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:54,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:54,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:54,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:13:54,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1193467565, now seen corresponding path program 1 times [2021-11-23 17:13:54,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:54,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836953149] [2021-11-23 17:13:54,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:54,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:54,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:54,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:54,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 17:13:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:54,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 17:13:54,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:54,913 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 17:13:54,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:54,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:54,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836953149] [2021-11-23 17:13:54,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836953149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:54,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:54,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 17:13:54,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960335641] [2021-11-23 17:13:54,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:54,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 17:13:54,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:54,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 17:13:54,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:13:54,916 INFO L87 Difference]: Start difference. First operand 290 states and 363 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 17:13:55,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:13:55,055 INFO L93 Difference]: Finished difference Result 446 states and 551 transitions. [2021-11-23 17:13:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:13:55,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2021-11-23 17:13:55,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:13:55,059 INFO L225 Difference]: With dead ends: 446 [2021-11-23 17:13:55,059 INFO L226 Difference]: Without dead ends: 292 [2021-11-23 17:13:55,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:13:55,061 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 81 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 17:13:55,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 740 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 17:13:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-23 17:13:55,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 278. [2021-11-23 17:13:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 272 states have (on average 1.2389705882352942) internal successors, (337), 273 states have internal predecessors, (337), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:13:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 343 transitions. [2021-11-23 17:13:55,081 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 343 transitions. Word has length 44 [2021-11-23 17:13:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:13:55,082 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 343 transitions. [2021-11-23 17:13:55,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 17:13:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 343 transitions. [2021-11-23 17:13:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 17:13:55,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:13:55,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:13:55,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 17:13:55,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:13:55,299 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:13:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:13:55,300 INFO L85 PathProgramCache]: Analyzing trace with hash -440515753, now seen corresponding path program 1 times [2021-11-23 17:13:55,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:13:55,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562854787] [2021-11-23 17:13:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:13:55,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:13:55,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:13:55,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:13:55,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 17:13:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 17:13:55,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 17:13:55,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 17:13:55,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:55,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 17:13:55,671 INFO L354 Elim1Store]: treesize reduction 165, result has 13.6 percent of original size [2021-11-23 17:13:55,672 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 3 case distinctions, treesize of input 29 treesize of output 36 [2021-11-23 17:13:55,731 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-23 17:13:55,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 20 [2021-11-23 17:13:55,861 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 17:13:55,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 17:13:55,862 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 17:13:55,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562854787] [2021-11-23 17:13:55,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562854787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 17:13:55,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 17:13:55,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 17:13:55,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232269623] [2021-11-23 17:13:55,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 17:13:55,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 17:13:55,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 17:13:55,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 17:13:55,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 17:13:55,864 INFO L87 Difference]: Start difference. First operand 278 states and 343 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 17:13:58,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 17:14:00,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 17:14:00,387 INFO L93 Difference]: Finished difference Result 505 states and 611 transitions. [2021-11-23 17:14:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 17:14:00,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-23 17:14:00,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 17:14:00,391 INFO L225 Difference]: With dead ends: 505 [2021-11-23 17:14:00,391 INFO L226 Difference]: Without dead ends: 362 [2021-11-23 17:14:00,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 17:14:00,393 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 84 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 17:14:00,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 589 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 1 Unknown, 21 Unchecked, 4.5s Time] [2021-11-23 17:14:00,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-23 17:14:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 277. [2021-11-23 17:14:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 271 states have (on average 1.2361623616236161) internal successors, (335), 272 states have internal predecessors, (335), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 17:14:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 341 transitions. [2021-11-23 17:14:00,408 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 341 transitions. Word has length 44 [2021-11-23 17:14:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 17:14:00,409 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 341 transitions. [2021-11-23 17:14:00,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 17:14:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 341 transitions. [2021-11-23 17:14:00,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 17:14:00,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 17:14:00,413 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 17:14:00,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 17:14:00,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:00,628 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 17:14:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 17:14:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1792852115, now seen corresponding path program 1 times [2021-11-23 17:14:00,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 17:14:00,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602891982] [2021-11-23 17:14:00,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 17:14:00,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 17:14:00,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat [2021-11-23 17:14:00,636 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 17:14:00,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 17:14:00,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-23 17:14:00,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/mathsat -unsat_core_generation=3 [2021-11-23 17:14:00,951 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Set is immutable at de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.UnmodifiableTransFormula.removeSuperfluousVars(UnmodifiableTransFormula.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaBuilder.finishConstruction(TransFormulaBuilder.java:273) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.constructGlobalVarsAssignment(OldVarsAssignmentCache.java:155) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.OldVarsAssignmentCache.getGlobalVarsAssignment(OldVarsAssignmentCache.java:93) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:89) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.DefaultTransFormulas.getGlobalVarAssignmentFromValidPos(DefaultTransFormulas.java:1) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedFormulas.getGlobalVarAssignment(NestedFormulas.java:126) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckUtils.decoupleArrayValues(TraceCheckUtils.java:384) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:87) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) 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.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:124) 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 17:14:00,955 INFO L158 Benchmark]: Toolchain (without parser) took 23063.68ms. Allocated memory was 58.7MB in the beginning and 104.9MB in the end (delta: 46.1MB). Free memory was 34.4MB in the beginning and 49.7MB in the end (delta: -15.2MB). Peak memory consumption was 30.4MB. Max. memory is 16.1GB. [2021-11-23 17:14:00,956 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 58.7MB. Free memory was 40.1MB in the beginning and 40.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 17:14:00,956 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1061.74ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.3MB in the beginning and 45.6MB in the end (delta: -11.3MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2021-11-23 17:14:00,956 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.25ms. Allocated memory is still 71.3MB. Free memory was 45.6MB in the beginning and 38.4MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 17:14:00,957 INFO L158 Benchmark]: Boogie Preprocessor took 159.03ms. Allocated memory is still 71.3MB. Free memory was 38.4MB in the beginning and 44.4MB in the end (delta: -6.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 17:14:00,957 INFO L158 Benchmark]: RCFGBuilder took 7982.95ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 44.4MB in the beginning and 66.5MB in the end (delta: -22.2MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-11-23 17:14:00,957 INFO L158 Benchmark]: TraceAbstraction took 13749.03ms. Allocated memory is still 104.9MB. Free memory was 65.9MB in the beginning and 49.7MB in the end (delta: 16.2MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2021-11-23 17:14:00,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 58.7MB. Free memory was 40.1MB in the beginning and 40.0MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1061.74ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.3MB in the beginning and 45.6MB in the end (delta: -11.3MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.25ms. Allocated memory is still 71.3MB. Free memory was 45.6MB in the beginning and 38.4MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 159.03ms. Allocated memory is still 71.3MB. Free memory was 38.4MB in the beginning and 44.4MB in the end (delta: -6.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * RCFGBuilder took 7982.95ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 44.4MB in the beginning and 66.5MB in the end (delta: -22.2MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 13749.03ms. Allocated memory is still 104.9MB. Free memory was 65.9MB in the beginning and 49.7MB in the end (delta: 16.2MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Set is immutable: de.uni_freiburg.informatik.ultimate.util.datastructures.ImmutableSet.retainAll(ImmutableSet.java:338) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-23 17:14:01,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebfa6274-09c2-4d6c-b067-7dcce8aa2cc9/bin/utaipan-fb15Y9Yzbl/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 Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: Set is immutable