./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI --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 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 01:59:15,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:59:15,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:59:15,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:59:15,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:59:15,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:59:15,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:59:15,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:59:15,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:59:15,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:59:15,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:59:15,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:59:15,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:59:15,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:59:15,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:59:15,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:59:15,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:59:15,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:59:15,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:59:15,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:59:15,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:59:15,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:59:15,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:59:15,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:59:15,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:59:15,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:59:15,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:59:15,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:59:15,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:59:15,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:59:15,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:59:15,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:59:15,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:59:15,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:59:15,538 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:59:15,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:59:15,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:59:15,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:59:15,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:59:15,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:59:15,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:59:15,545 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:59:15,574 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:59:15,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:59:15,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:59:15,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:59:15,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:59:15,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:59:15,577 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:59:15,577 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:59:15,578 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:59:15,578 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:59:15,578 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:59:15,579 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:59:15,579 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:59:15,579 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:59:15,580 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:59:15,580 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:59:15,581 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:59:15,581 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:59:15,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:59:15,582 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:59:15,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:59:15,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:59:15,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:59:15,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:59:15,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:59:15,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:59:15,585 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:59:15,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:59:15,585 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:59:15,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:59:15,586 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:59:15,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:59:15,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:59:15,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:59:15,588 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:59:15,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:59:15,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:59:15,588 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:59:15,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:59:15,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:59:15,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:59:15,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f [2022-11-03 01:59:15,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:59:15,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:59:15,947 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:59:15,949 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:59:15,951 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:59:15,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2022-11-03 01:59:16,055 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/data/127d5e10f/c919f97485cd4d268592f1199ee54416/FLAG2cf1072bb [2022-11-03 01:59:16,842 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:59:16,842 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2022-11-03 01:59:16,873 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/data/127d5e10f/c919f97485cd4d268592f1199ee54416/FLAG2cf1072bb [2022-11-03 01:59:17,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/data/127d5e10f/c919f97485cd4d268592f1199ee54416 [2022-11-03 01:59:17,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:59:17,010 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:59:17,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:59:17,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:59:17,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:59:17,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:17,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c031965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17, skipping insertion in model container [2022-11-03 01:59:17,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:17,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:59:17,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:59:17,550 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_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2022-11-03 01:59:17,690 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_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2022-11-03 01:59:17,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:59:17,735 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:59:17,794 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_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2022-11-03 01:59:17,876 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2022-11-03 01:59:17,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:59:17,933 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:59:17,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17 WrapperNode [2022-11-03 01:59:17,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:59:17,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:59:17,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:59:17,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:59:17,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:17,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:18,136 INFO L138 Inliner]: procedures = 177, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1557 [2022-11-03 01:59:18,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:59:18,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:59:18,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:59:18,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:59:18,161 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:18,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:18,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:18,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:18,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:18,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:18,378 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:18,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:18,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:59:18,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:59:18,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:59:18,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:59:18,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (1/1) ... [2022-11-03 01:59:18,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:59:18,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:18,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:59:18,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:59:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:59:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 01:59:18,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 01:59:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:59:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 01:59:18,526 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 01:59:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 01:59:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:59:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 01:59:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:59:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 01:59:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 01:59:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:59:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:59:18,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:59:18,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:59:18,880 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:59:18,882 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:59:21,418 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:59:22,118 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:59:22,118 INFO L300 CfgBuilder]: Removed 92 assume(true) statements. [2022-11-03 01:59:22,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:59:22 BoogieIcfgContainer [2022-11-03 01:59:22,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:59:22,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:59:22,125 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:59:22,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:59:22,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:59:17" (1/3) ... [2022-11-03 01:59:22,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596a756a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:59:22, skipping insertion in model container [2022-11-03 01:59:22,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:59:17" (2/3) ... [2022-11-03 01:59:22,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596a756a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:59:22, skipping insertion in model container [2022-11-03 01:59:22,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:59:22" (3/3) ... [2022-11-03 01:59:22,133 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-2.i [2022-11-03 01:59:22,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:59:22,155 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 01:59:22,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:59:22,219 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@448d96fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:59:22,220 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 01:59:22,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 149 states have (on average 1.8120805369127517) internal successors, (270), 156 states have internal predecessors, (270), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 01:59:22,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 01:59:22,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:22,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 01:59:22,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:22,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash -2112910889, now seen corresponding path program 1 times [2022-11-03 01:59:22,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:22,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861894777] [2022-11-03 01:59:22,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:22,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:22,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:22,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:22,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861894777] [2022-11-03 01:59:22,454 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:59:22,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958189395] [2022-11-03 01:59:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:22,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:22,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:22,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:22,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:59:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:22,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 01:59:22,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:59:22,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:59:22,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958189395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:22,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:22,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:59:22,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084369228] [2022-11-03 01:59:22,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:22,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:59:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:22,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:59:22,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:59:22,920 INFO L87 Difference]: Start difference. First operand has 165 states, 149 states have (on average 1.8120805369127517) internal successors, (270), 156 states have internal predecessors, (270), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:24,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:24,240 INFO L93 Difference]: Finished difference Result 329 states and 588 transitions. [2022-11-03 01:59:24,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:59:24,248 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 01:59:24,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:24,260 INFO L225 Difference]: With dead ends: 329 [2022-11-03 01:59:24,260 INFO L226 Difference]: Without dead ends: 150 [2022-11-03 01:59:24,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:59:24,269 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:24,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 01:59:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-03 01:59:24,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-03 01:59:24,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 141 states have internal predecessors, (161), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 01:59:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2022-11-03 01:59:24,333 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 6 [2022-11-03 01:59:24,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:24,334 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2022-11-03 01:59:24,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2022-11-03 01:59:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 01:59:24,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:24,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:24,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 01:59:24,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 01:59:24,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:24,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:24,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2033050836, now seen corresponding path program 1 times [2022-11-03 01:59:24,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:24,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101771499] [2022-11-03 01:59:24,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:24,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:24,614 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:24,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101771499] [2022-11-03 01:59:24,620 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-03 01:59:24,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486095898] [2022-11-03 01:59:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:24,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:24,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:24,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:24,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:59:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:24,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 01:59:24,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:59:24,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:59:24,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486095898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:24,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:59:24,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:59:24,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295576087] [2022-11-03 01:59:24,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:24,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:59:24,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:59:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:24,975 INFO L87 Difference]: Start difference. First operand 150 states and 183 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:27,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:27,082 INFO L93 Difference]: Finished difference Result 342 states and 425 transitions. [2022-11-03 01:59:27,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:59:27,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 17 [2022-11-03 01:59:27,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:27,092 INFO L225 Difference]: With dead ends: 342 [2022-11-03 01:59:27,092 INFO L226 Difference]: Without dead ends: 290 [2022-11-03 01:59:27,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:59:27,095 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 149 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:27,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 334 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 01:59:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-03 01:59:27,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 151. [2022-11-03 01:59:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 142 states have internal predecessors, (162), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 01:59:27,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 184 transitions. [2022-11-03 01:59:27,117 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 184 transitions. Word has length 17 [2022-11-03 01:59:27,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:27,118 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 184 transitions. [2022-11-03 01:59:27,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 184 transitions. [2022-11-03 01:59:27,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-03 01:59:27,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:27,121 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:59:27,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:27,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:27,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:27,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash 243995739, now seen corresponding path program 1 times [2022-11-03 01:59:27,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:27,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641163903] [2022-11-03 01:59:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:27,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:27,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:59:27,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25141786] [2022-11-03 01:59:27,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:27,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:27,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:27,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:27,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:59:29,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:29,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:59:29,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:29,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:59:29,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:59:29,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:29,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641163903] [2022-11-03 01:59:29,503 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:59:29,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25141786] [2022-11-03 01:59:29,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25141786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:29,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1724645602] [2022-11-03 01:59:29,528 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-03 01:59:29,528 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:59:29,533 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:59:29,539 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:59:29,539 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:59:29,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:29,697 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:59:29,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-03 01:59:29,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:29,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 01:59:29,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:29,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:29,797 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 01:59:29,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 01:59:29,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:29,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:29,818 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-03 01:59:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:29,835 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:29,837 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-03 01:59:29,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:29,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 01:59:29,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:29,889 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 01:59:30,399 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 01:59:30,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 01:59:30,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 01:59:30,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 01:59:30,493 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:59:30,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 01:59:30,940 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 01:59:30,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 01:59:30,975 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 01:59:31,015 WARN L234 Elim1Store]: Array PQE input equivalent to false [2022-11-03 01:59:31,029 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:59:32,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1724645602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:32,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:59:32,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3] total 11 [2022-11-03 01:59:32,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005701910] [2022-11-03 01:59:32,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:32,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:59:32,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:32,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:59:32,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=73, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:59:32,422 INFO L87 Difference]: Start difference. First operand 151 states and 184 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:39,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:59:40,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:59:41,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:41,970 INFO L93 Difference]: Finished difference Result 319 states and 389 transitions. [2022-11-03 01:59:41,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:59:41,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-11-03 01:59:41,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:41,972 INFO L225 Difference]: With dead ends: 319 [2022-11-03 01:59:41,972 INFO L226 Difference]: Without dead ends: 170 [2022-11-03 01:59:41,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:59:41,975 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 12 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:41,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 607 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-03 01:59:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-03 01:59:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 161. [2022-11-03 01:59:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 146 states have (on average 1.178082191780822) internal successors, (172), 152 states have internal predecessors, (172), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 01:59:41,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-11-03 01:59:41,998 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 61 [2022-11-03 01:59:41,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:41,998 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-11-03 01:59:41,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:59:41,999 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-11-03 01:59:42,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 01:59:42,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:42,002 INFO L195 NwaCegarLoop]: trace histogram [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, 1] [2022-11-03 01:59:42,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:42,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:42,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:42,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1551302318, now seen corresponding path program 1 times [2022-11-03 01:59:42,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:42,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579610658] [2022-11-03 01:59:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:42,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:42,443 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:59:42,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023125599] [2022-11-03 01:59:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:42,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:42,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:42,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:42,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 01:59:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:43,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:59:43,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:43,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 01:59:43,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 01:59:44,071 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:44,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579610658] [2022-11-03 01:59:44,071 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:59:44,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023125599] [2022-11-03 01:59:44,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023125599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:44,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1001701031] [2022-11-03 01:59:44,077 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-03 01:59:44,077 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:59:44,078 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:59:44,078 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:59:44,079 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:59:44,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,192 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:59:44,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-03 01:59:44,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 01:59:44,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,269 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 01:59:44,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 01:59:44,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 01:59:44,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 01:59:44,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,323 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:44,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,341 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 01:59:44,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 43 [2022-11-03 01:59:44,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:44,414 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 01:59:44,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 01:59:44,714 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 01:59:44,729 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 01:59:44,744 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 01:59:44,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 01:59:44,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 01:59:44,801 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 01:59:44,826 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2022-11-03 01:59:44,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-11-03 01:59:44,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 01:59:44,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 01:59:44,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-03 01:59:44,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-03 01:59:45,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 01:59:45,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 01:59:45,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 01:59:45,404 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 01:59:45,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 01:59:45,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 01:59:45,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2022-11-03 01:59:45,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 01:59:45,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-03 01:59:45,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-03 01:59:45,558 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-11-03 01:59:45,577 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 01:59:45,731 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 78 for LOIs [2022-11-03 01:59:45,775 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:59:47,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1001701031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:59:47,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 01:59:47,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4] total 17 [2022-11-03 01:59:47,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608888528] [2022-11-03 01:59:47,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:59:47,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 01:59:47,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:59:47,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 01:59:47,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-03 01:59:47,690 INFO L87 Difference]: Start difference. First operand 161 states and 194 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:59:52,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 01:59:55,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 01:59:56,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:59:56,568 INFO L93 Difference]: Finished difference Result 321 states and 391 transitions. [2022-11-03 01:59:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 01:59:56,569 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 74 [2022-11-03 01:59:56,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:59:56,571 INFO L225 Difference]: With dead ends: 321 [2022-11-03 01:59:56,571 INFO L226 Difference]: Without dead ends: 172 [2022-11-03 01:59:56,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2022-11-03 01:59:56,573 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 15 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-03 01:59:56,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 503 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 200 Invalid, 0 Unknown, 93 Unchecked, 6.5s Time] [2022-11-03 01:59:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-11-03 01:59:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2022-11-03 01:59:56,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 150 states have (on average 1.1733333333333333) internal successors, (176), 156 states have internal predecessors, (176), 12 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 7 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 01:59:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2022-11-03 01:59:56,606 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 74 [2022-11-03 01:59:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:59:56,606 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2022-11-03 01:59:56,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 01:59:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2022-11-03 01:59:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 01:59:56,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:59:56,610 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2022-11-03 01:59:56,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:59:56,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-03 01:59:56,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:59:56,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:59:56,828 INFO L85 PathProgramCache]: Analyzing trace with hash 641923186, now seen corresponding path program 1 times [2022-11-03 01:59:56,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:59:56,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479060448] [2022-11-03 01:59:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:56,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:59:57,052 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 01:59:57,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480712378] [2022-11-03 01:59:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:59:57,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:59:57,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:59:57,054 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:59:57,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 01:59:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:59:58,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 01:59:58,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:59:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 01:59:58,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:59:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-03 01:59:58,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:59:58,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479060448] [2022-11-03 01:59:58,699 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 01:59:58,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480712378] [2022-11-03 01:59:58,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480712378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:59:58,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [968330871] [2022-11-03 01:59:58,704 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-03 01:59:58,704 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:59:58,705 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:59:58,705 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:59:58,705 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:59:58,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:58,901 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 01:59:58,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2022-11-03 01:59:58,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:58,920 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 01:59:58,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:58,951 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 01:59:58,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:58,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:58,997 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-03 01:59:58,998 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 38 [2022-11-03 01:59:59,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:59,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2022-11-03 01:59:59,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:59,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:59,077 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 01:59:59,078 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-03 01:59:59,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 01:59:59,096 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 01:59:59,097 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 39 [2022-11-03 01:59:59,346 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 01:59:59,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-03 01:59:59,375 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 9 [2022-11-03 01:59:59,384 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-03 01:59:59,406 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 01:59:59,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-03 01:59:59,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 34 [2022-11-03 01:59:59,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 01:59:59,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 15 [2022-11-03 01:59:59,511 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-03 01:59:59,534 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 46 [2022-11-03 01:59:59,551 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 25 [2022-11-03 01:59:59,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-03 01:59:59,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:59:59,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 01:59:59,671 INFO L356 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-03 01:59:59,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 56 [2022-11-03 01:59:59,706 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 01:59:59,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 50 [2022-11-03 01:59:59,739 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-03 01:59:59,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 46 [2022-11-03 01:59:59,775 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 01:59:59,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-11-03 01:59:59,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-03 01:59:59,835 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:59,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 01:59:59,859 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:59,859 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 30 [2022-11-03 01:59:59,880 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:59,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 16 [2022-11-03 01:59:59,963 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:59,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 30 [2022-11-03 01:59:59,987 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 01:59:59,988 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 16 [2022-11-03 02:00:00,002 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-03 02:00:00,003 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2022-11-03 02:00:09,872 WARN L234 SmtUtils]: Spent 9.79s on a formula simplification. DAG size of input: 67 DAG size of output: 32 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:00:09,873 INFO L356 Elim1Store]: treesize reduction 340, result has 16.0 percent of original size [2022-11-03 02:00:09,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:10,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:00:10,075 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_#memory_$Pointer$.base_598| input size 141 context size 141 output size 141 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2022-11-03 02:00:10,081 INFO L158 Benchmark]: Toolchain (without parser) took 53070.36ms. Allocated memory was 107.0MB in the beginning and 478.2MB in the end (delta: 371.2MB). Free memory was 72.1MB in the beginning and 134.6MB in the end (delta: -62.5MB). Peak memory consumption was 308.7MB. Max. memory is 16.1GB. [2022-11-03 02:00:10,081 INFO L158 Benchmark]: CDTParser took 4.93ms. Allocated memory is still 107.0MB. Free memory was 61.1MB in the beginning and 60.9MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:00:10,081 INFO L158 Benchmark]: CACSL2BoogieTranslator took 919.27ms. Allocated memory is still 107.0MB. Free memory was 72.1MB in the beginning and 50.3MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-03 02:00:10,082 INFO L158 Benchmark]: Boogie Procedure Inliner took 202.03ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 50.3MB in the beginning and 96.5MB in the end (delta: -46.2MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. [2022-11-03 02:00:10,082 INFO L158 Benchmark]: Boogie Preprocessor took 285.00ms. Allocated memory is still 130.0MB. Free memory was 96.5MB in the beginning and 84.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:00:10,083 INFO L158 Benchmark]: RCFGBuilder took 3698.77ms. Allocated memory was 130.0MB in the beginning and 197.1MB in the end (delta: 67.1MB). Free memory was 84.7MB in the beginning and 90.4MB in the end (delta: -5.7MB). Peak memory consumption was 91.2MB. Max. memory is 16.1GB. [2022-11-03 02:00:10,083 INFO L158 Benchmark]: TraceAbstraction took 47955.00ms. Allocated memory was 197.1MB in the beginning and 478.2MB in the end (delta: 281.0MB). Free memory was 89.4MB in the beginning and 134.6MB in the end (delta: -45.3MB). Peak memory consumption was 237.1MB. Max. memory is 16.1GB. [2022-11-03 02:00:10,086 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.93ms. Allocated memory is still 107.0MB. Free memory was 61.1MB in the beginning and 60.9MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 919.27ms. Allocated memory is still 107.0MB. Free memory was 72.1MB in the beginning and 50.3MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 202.03ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 50.3MB in the beginning and 96.5MB in the end (delta: -46.2MB). Peak memory consumption was 17.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 285.00ms. Allocated memory is still 130.0MB. Free memory was 96.5MB in the beginning and 84.7MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3698.77ms. Allocated memory was 130.0MB in the beginning and 197.1MB in the end (delta: 67.1MB). Free memory was 84.7MB in the beginning and 90.4MB in the end (delta: -5.7MB). Peak memory consumption was 91.2MB. Max. memory is 16.1GB. * TraceAbstraction took 47955.00ms. Allocated memory was 197.1MB in the beginning and 478.2MB in the end (delta: 281.0MB). Free memory was 89.4MB in the beginning and 134.6MB in the end (delta: -45.3MB). Peak memory consumption was 237.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_#memory_$Pointer$.base_598| input size 141 context size 141 output size 141 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_#memory_$Pointer$.base_598| input size 141 context size 141 output size 141: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:364) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:00:10,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI --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 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:00:12,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:00:12,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:00:12,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:00:12,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:00:12,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:00:12,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:00:12,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:00:12,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:00:12,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:00:12,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:00:12,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:00:12,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:00:12,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:00:12,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:00:12,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:00:12,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:00:12,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:00:12,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:00:12,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:00:12,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:00:12,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:00:12,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:00:12,727 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:00:12,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:00:12,732 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:00:12,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:00:12,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:00:12,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:00:12,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:00:12,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:00:12,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:00:12,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:00:12,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:00:12,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:00:12,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:00:12,741 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:00:12,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:00:12,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:00:12,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:00:12,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:00:12,745 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 02:00:12,772 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:00:12,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:00:12,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:00:12,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:00:12,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:00:12,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:00:12,775 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:00:12,775 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:00:12,776 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:00:12,776 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:00:12,776 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:00:12,777 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:00:12,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:00:12,778 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:00:12,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:00:12,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:00:12,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:00:12,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:00:12,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:00:12,780 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:00:12,780 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:00:12,780 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:00:12,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:00:12,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:00:12,781 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:00:12,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:00:12,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:00:12,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:00:12,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:00:12,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:00:12,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:00:12,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:00:12,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:00:12,783 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:00:12,784 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:12,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:00:12,784 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:00:12,784 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:00:12,785 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_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a08b66a27502bd32ab373960778294a6ce88841aa5560ae4bca712e152c143f [2022-11-03 02:00:13,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:00:13,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:00:13,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:00:13,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:00:13,284 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:00:13,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2022-11-03 02:00:13,372 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/data/8770b9a14/8a51c3bb308e485496a825c4ef86b28c/FLAGa751d300c [2022-11-03 02:00:14,047 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:00:14,048 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i [2022-11-03 02:00:14,066 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/data/8770b9a14/8a51c3bb308e485496a825c4ef86b28c/FLAGa751d300c [2022-11-03 02:00:14,279 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/data/8770b9a14/8a51c3bb308e485496a825c4ef86b28c [2022-11-03 02:00:14,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:00:14,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:00:14,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:00:14,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:00:14,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:00:14,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:00:14" (1/1) ... [2022-11-03 02:00:14,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@159c57ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:14, skipping insertion in model container [2022-11-03 02:00:14,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:00:14" (1/1) ... [2022-11-03 02:00:14,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:00:14,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:00:14,920 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_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2022-11-03 02:00:15,183 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_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2022-11-03 02:00:15,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:00:15,215 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 02:00:15,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:00:15,259 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_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2022-11-03 02:00:15,337 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_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2022-11-03 02:00:15,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:00:15,351 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:00:15,378 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_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[33021,33034] [2022-11-03 02:00:15,470 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_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test5-2.i[49681,49694] [2022-11-03 02:00:15,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:00:15,521 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:00:15,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15 WrapperNode [2022-11-03 02:00:15,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:00:15,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:00:15,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:00:15,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:00:15,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,592 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,714 INFO L138 Inliner]: procedures = 180, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1557 [2022-11-03 02:00:15,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:00:15,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:00:15,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:00:15,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:00:15,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,878 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:00:15,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:00:15,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:00:15,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:00:15,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (1/1) ... [2022-11-03 02:00:15,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:00:15,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:00:15,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:00:15,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:00:16,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 02:00:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:00:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:00:16,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:00:16,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:00:16,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:00:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:00:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:00:16,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:00:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:00:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:00:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:00:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:00:16,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:00:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:00:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:00:16,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:00:16,465 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:00:16,467 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:00:29,796 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:00:29,819 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:00:29,819 INFO L300 CfgBuilder]: Removed 92 assume(true) statements. [2022-11-03 02:00:29,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:00:29 BoogieIcfgContainer [2022-11-03 02:00:29,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:00:29,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:00:29,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:00:29,835 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:00:29,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:00:14" (1/3) ... [2022-11-03 02:00:29,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13372c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:00:29, skipping insertion in model container [2022-11-03 02:00:29,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:00:15" (2/3) ... [2022-11-03 02:00:29,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13372c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:00:29, skipping insertion in model container [2022-11-03 02:00:29,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:00:29" (3/3) ... [2022-11-03 02:00:29,839 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test5-2.i [2022-11-03 02:00:29,862 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:00:29,863 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:00:29,973 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:00:29,981 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4acfbab7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:00:29,982 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:00:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 271 states have (on average 1.6974169741697418) internal successors, (460), 278 states have internal predecessors, (460), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 02:00:29,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 02:00:29,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:29,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:29,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:30,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash 691392686, now seen corresponding path program 1 times [2022-11-03 02:00:30,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:30,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261697240] [2022-11-03 02:00:30,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:30,023 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:30,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:30,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:30,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:00:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:30,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 02:00:30,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:30,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:30,387 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:30,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261697240] [2022-11-03 02:00:30,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261697240] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:30,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:30,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:00:30,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797162580] [2022-11-03 02:00:30,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:30,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:00:30,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:30,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:00:30,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:00:30,442 INFO L87 Difference]: Start difference. First operand has 287 states, 271 states have (on average 1.6974169741697418) internal successors, (460), 278 states have internal predecessors, (460), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) 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) [2022-11-03 02:00:30,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:30,508 INFO L93 Difference]: Finished difference Result 572 states and 967 transitions. [2022-11-03 02:00:30,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:00:30,511 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 [2022-11-03 02:00:30,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:30,523 INFO L225 Difference]: With dead ends: 572 [2022-11-03 02:00:30,523 INFO L226 Difference]: Without dead ends: 254 [2022-11-03 02:00:30,527 INFO L412 NwaCegarLoop]: 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 [2022-11-03 02:00:30,531 INFO L413 NwaCegarLoop]: 381 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, 381 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 [2022-11-03 02:00:30,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:00:30,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-03 02:00:30,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-11-03 02:00:30,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 239 states have (on average 1.3179916317991631) internal successors, (315), 245 states have internal predecessors, (315), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 02:00:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 337 transitions. [2022-11-03 02:00:30,606 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 337 transitions. Word has length 8 [2022-11-03 02:00:30,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:30,608 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 337 transitions. [2022-11-03 02:00:30,608 INFO L496 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) [2022-11-03 02:00:30,608 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 337 transitions. [2022-11-03 02:00:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-03 02:00:30,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:30,618 INFO L195 NwaCegarLoop]: 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] [2022-11-03 02:00:30,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:30,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:00:30,835 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:30,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:30,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1622673081, now seen corresponding path program 1 times [2022-11-03 02:00:30,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:30,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293466373] [2022-11-03 02:00:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:30,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:30,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:30,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:30,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:00:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:31,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:00:31,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:31,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:31,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:31,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:31,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293466373] [2022-11-03 02:00:31,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293466373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:31,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:31,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:31,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106056498] [2022-11-03 02:00:31,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:31,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:31,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:31,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:31,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:31,310 INFO L87 Difference]: Start difference. First operand 254 states and 337 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:31,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:31,619 INFO L93 Difference]: Finished difference Result 573 states and 768 transitions. [2022-11-03 02:00:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:31,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2022-11-03 02:00:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:31,632 INFO L225 Difference]: With dead ends: 573 [2022-11-03 02:00:31,633 INFO L226 Difference]: Without dead ends: 495 [2022-11-03 02:00:31,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:31,640 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 300 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:31,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 701 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:00:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-03 02:00:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 255. [2022-11-03 02:00:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 240 states have (on average 1.3166666666666667) internal successors, (316), 246 states have internal predecessors, (316), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 02:00:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2022-11-03 02:00:31,695 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 42 [2022-11-03 02:00:31,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:31,696 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2022-11-03 02:00:31,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:31,697 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2022-11-03 02:00:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-03 02:00:31,705 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:31,706 INFO L195 NwaCegarLoop]: 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, 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, 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] [2022-11-03 02:00:31,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:31,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:00:31,922 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:31,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:31,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1488765968, now seen corresponding path program 1 times [2022-11-03 02:00:31,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:31,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990163698] [2022-11-03 02:00:31,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:31,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:31,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:31,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:31,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:00:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:34,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2104 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:00:34,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:34,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:34,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:34,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990163698] [2022-11-03 02:00:34,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990163698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:34,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:34,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:00:34,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308956095] [2022-11-03 02:00:34,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:34,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:00:34,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:34,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:00:34,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:00:34,597 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:34,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:34,769 INFO L93 Difference]: Finished difference Result 516 states and 685 transitions. [2022-11-03 02:00:34,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:00:34,770 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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 140 [2022-11-03 02:00:34,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:34,772 INFO L225 Difference]: With dead ends: 516 [2022-11-03 02:00:34,772 INFO L226 Difference]: Without dead ends: 264 [2022-11-03 02:00:34,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:00:34,775 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 291 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:34,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 643 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:00:34,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-03 02:00:34,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 258. [2022-11-03 02:00:34,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 243 states have (on average 1.2798353909465021) internal successors, (311), 249 states have internal predecessors, (311), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 02:00:34,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 333 transitions. [2022-11-03 02:00:34,795 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 333 transitions. Word has length 140 [2022-11-03 02:00:34,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:34,795 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 333 transitions. [2022-11-03 02:00:34,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:34,796 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 333 transitions. [2022-11-03 02:00:34,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-03 02:00:34,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:34,801 INFO L195 NwaCegarLoop]: 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, 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, 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] [2022-11-03 02:00:34,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:35,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:00:35,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:35,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1835639812, now seen corresponding path program 1 times [2022-11-03 02:00:35,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:35,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701508507] [2022-11-03 02:00:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:35,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:35,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:35,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:35,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:00:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:37,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2098 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:00:37,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:37,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:37,950 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:37,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701508507] [2022-11-03 02:00:37,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701508507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:37,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:37,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:00:37,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612801580] [2022-11-03 02:00:37,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:37,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:37,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:37,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:37,954 INFO L87 Difference]: Start difference. First operand 258 states and 333 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:38,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:38,561 INFO L93 Difference]: Finished difference Result 554 states and 709 transitions. [2022-11-03 02:00:38,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:38,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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 140 [2022-11-03 02:00:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:38,574 INFO L225 Difference]: With dead ends: 554 [2022-11-03 02:00:38,575 INFO L226 Difference]: Without dead ends: 299 [2022-11-03 02:00:38,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:00:38,577 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 11 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:38,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 635 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:00:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-03 02:00:38,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-11-03 02:00:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 284 states have (on average 1.2535211267605635) internal successors, (356), 290 states have internal predecessors, (356), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-03 02:00:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 378 transitions. [2022-11-03 02:00:38,596 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 378 transitions. Word has length 140 [2022-11-03 02:00:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:38,597 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 378 transitions. [2022-11-03 02:00:38,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:00:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 378 transitions. [2022-11-03 02:00:38,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-03 02:00:38,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:38,600 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:38,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:38,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:00:38,815 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:38,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:38,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1458435867, now seen corresponding path program 1 times [2022-11-03 02:00:38,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:38,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [958505058] [2022-11-03 02:00:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:38,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:38,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:38,821 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:38,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:00:40,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:40,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:00:40,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:40,936 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:00:40,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:40,936 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:40,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [958505058] [2022-11-03 02:00:40,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [958505058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:40,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:00:40,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:00:40,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748152761] [2022-11-03 02:00:40,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:40,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:00:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:40,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:00:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:00:40,940 INFO L87 Difference]: Start difference. First operand 299 states and 378 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:00:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:41,044 INFO L93 Difference]: Finished difference Result 557 states and 717 transitions. [2022-11-03 02:00:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:00:41,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 155 [2022-11-03 02:00:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:41,047 INFO L225 Difference]: With dead ends: 557 [2022-11-03 02:00:41,048 INFO L226 Difference]: Without dead ends: 302 [2022-11-03 02:00:41,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:00:41,049 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 2 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:41,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 959 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:00:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-03 02:00:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2022-11-03 02:00:41,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 286 states have (on average 1.2552447552447552) internal successors, (359), 293 states have internal predecessors, (359), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-03 02:00:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 383 transitions. [2022-11-03 02:00:41,081 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 383 transitions. Word has length 155 [2022-11-03 02:00:41,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:41,082 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 383 transitions. [2022-11-03 02:00:41,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:00:41,082 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 383 transitions. [2022-11-03 02:00:41,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 02:00:41,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:41,085 INFO L195 NwaCegarLoop]: 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:41,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:41,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:00:41,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:41,307 INFO L85 PathProgramCache]: Analyzing trace with hash -2017891385, now seen corresponding path program 1 times [2022-11-03 02:00:41,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:41,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583021462] [2022-11-03 02:00:41,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:41,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:41,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:41,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:41,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:00:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:43,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:00:43,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:43,611 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:00:43,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:00:43,791 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:43,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583021462] [2022-11-03 02:00:43,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583021462] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:00:43,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1190675495] [2022-11-03 02:00:43,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:43,792 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:43,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:00:43,799 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:00:43,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-03 02:00:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:46,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:00:46,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:00:46,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:46,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1190675495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:46,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:00:46,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-03 02:00:46,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008493064] [2022-11-03 02:00:46,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:46,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:00:46,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:00:46,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:00:46,389 INFO L87 Difference]: Start difference. First operand 302 states and 383 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:00:46,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:46,654 INFO L93 Difference]: Finished difference Result 618 states and 797 transitions. [2022-11-03 02:00:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:00:46,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2022-11-03 02:00:46,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:46,661 INFO L225 Difference]: With dead ends: 618 [2022-11-03 02:00:46,663 INFO L226 Difference]: Without dead ends: 360 [2022-11-03 02:00:46,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:00:46,667 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 275 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:46,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1162 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:00:46,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-03 02:00:46,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 311. [2022-11-03 02:00:46,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 295 states have (on average 1.230508474576271) internal successors, (363), 302 states have internal predecessors, (363), 11 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (13), 7 states have call predecessors, (13), 11 states have call successors, (13) [2022-11-03 02:00:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 387 transitions. [2022-11-03 02:00:46,692 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 387 transitions. Word has length 157 [2022-11-03 02:00:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:46,693 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 387 transitions. [2022-11-03 02:00:46,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:00:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 387 transitions. [2022-11-03 02:00:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 02:00:46,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:46,697 INFO L195 NwaCegarLoop]: 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:46,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:46,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:47,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:00:47,115 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:47,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -331711547, now seen corresponding path program 1 times [2022-11-03 02:00:47,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:47,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077114186] [2022-11-03 02:00:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:47,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:47,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:47,119 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:47,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:00:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:49,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:00:49,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:00:49,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:49,491 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:00:49,492 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:49,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077114186] [2022-11-03 02:00:49,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077114186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:00:49,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1678566615] [2022-11-03 02:00:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:49,493 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:49,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:00:49,495 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:00:49,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-03 02:00:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:52,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:00:52,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:00:52,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:00:52,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1678566615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:00:52,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:00:52,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:00:52,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201676328] [2022-11-03 02:00:52,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:00:52,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:00:52,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:00:52,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:00:52,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:00:52,514 INFO L87 Difference]: Start difference. First operand 311 states and 387 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:00:53,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:00:53,125 INFO L93 Difference]: Finished difference Result 805 states and 1018 transitions. [2022-11-03 02:00:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:00:53,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 157 [2022-11-03 02:00:53,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:00:53,129 INFO L225 Difference]: With dead ends: 805 [2022-11-03 02:00:53,129 INFO L226 Difference]: Without dead ends: 538 [2022-11-03 02:00:53,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:00:53,131 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 225 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:00:53,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 712 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:00:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-03 02:00:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2022-11-03 02:00:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 511 states have (on average 1.2367906066536203) internal successors, (632), 523 states have internal predecessors, (632), 20 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (24), 12 states have call predecessors, (24), 20 states have call successors, (24) [2022-11-03 02:00:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 676 transitions. [2022-11-03 02:00:53,169 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 676 transitions. Word has length 157 [2022-11-03 02:00:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:00:53,170 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 676 transitions. [2022-11-03 02:00:53,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:00:53,171 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 676 transitions. [2022-11-03 02:00:53,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-03 02:00:53,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:00:53,174 INFO L195 NwaCegarLoop]: 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:00:53,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:53,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:00:53,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:53,591 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:00:53,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:00:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1811266681, now seen corresponding path program 1 times [2022-11-03 02:00:53,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:00:53,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069791889] [2022-11-03 02:00:53,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:53,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:00:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:00:53,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:00:53,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:00:55,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:55,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:00:55,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:00:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 02:00:55,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:00:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:00:56,076 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:00:56,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069791889] [2022-11-03 02:00:56,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069791889] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:00:56,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [369332152] [2022-11-03 02:00:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:00:56,077 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:00:56,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:00:56,080 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:00:56,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-03 02:00:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:00:58,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:00:58,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:01:00,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:01:00,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [369332152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:00,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:01:00,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:01:00,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944622767] [2022-11-03 02:01:00,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:00,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:00,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:01:00,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:00,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:01:00,017 INFO L87 Difference]: Start difference. First operand 536 states and 676 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:01:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:00,845 INFO L93 Difference]: Finished difference Result 923 states and 1166 transitions. [2022-11-03 02:01:00,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:00,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 164 [2022-11-03 02:01:00,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:00,859 INFO L225 Difference]: With dead ends: 923 [2022-11-03 02:01:00,859 INFO L226 Difference]: Without dead ends: 665 [2022-11-03 02:01:00,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 482 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:01:00,861 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 85 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:00,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 669 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:01:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-11-03 02:01:00,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2022-11-03 02:01:00,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 635 states have (on average 1.2377952755905512) internal successors, (786), 647 states have internal predecessors, (786), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-11-03 02:01:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 837 transitions. [2022-11-03 02:01:00,904 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 837 transitions. Word has length 164 [2022-11-03 02:01:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:00,905 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 837 transitions. [2022-11-03 02:01:00,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:01:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 837 transitions. [2022-11-03 02:01:00,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 02:01:00,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:00,908 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:00,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:01,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:01,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:01,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:01,332 INFO L85 PathProgramCache]: Analyzing trace with hash 645987174, now seen corresponding path program 1 times [2022-11-03 02:01:01,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:01:01,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501009010] [2022-11-03 02:01:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:01,333 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:01:01,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:01:01,335 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:01:01,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:01:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:03,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:01:03,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:03,437 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:01:03,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 02:01:03,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:01:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501009010] [2022-11-03 02:01:03,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501009010] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:03,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1198538689] [2022-11-03 02:01:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:03,569 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:03,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:01:03,570 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:01:03,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-03 02:01:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:06,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:01:06,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-03 02:01:06,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:01:06,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1198538689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:06,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:01:06,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-03 02:01:06,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632317735] [2022-11-03 02:01:06,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:06,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:01:06,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:01:06,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:01:06,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:01:06,374 INFO L87 Difference]: Start difference. First operand 663 states and 837 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:01:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:06,544 INFO L93 Difference]: Finished difference Result 881 states and 1145 transitions. [2022-11-03 02:01:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:01:06,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 174 [2022-11-03 02:01:06,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:06,549 INFO L225 Difference]: With dead ends: 881 [2022-11-03 02:01:06,549 INFO L226 Difference]: Without dead ends: 726 [2022-11-03 02:01:06,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:01:06,551 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 6 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:06,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 581 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:06,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-11-03 02:01:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 723. [2022-11-03 02:01:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 695 states have (on average 1.2172661870503596) internal successors, (846), 707 states have internal predecessors, (846), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-11-03 02:01:06,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 897 transitions. [2022-11-03 02:01:06,620 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 897 transitions. Word has length 174 [2022-11-03 02:01:06,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:06,621 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 897 transitions. [2022-11-03 02:01:06,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:01:06,621 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 897 transitions. [2022-11-03 02:01:06,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 02:01:06,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:06,624 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:06,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:06,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:07,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:01:07,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:07,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash 427132456, now seen corresponding path program 1 times [2022-11-03 02:01:07,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:01:07,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1720820890] [2022-11-03 02:01:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:07,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:01:07,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:01:07,057 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:01:07,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:01:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:09,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:01:09,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:09,251 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:01:09,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 02:01:09,395 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:01:09,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1720820890] [2022-11-03 02:01:09,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1720820890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:09,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [343329562] [2022-11-03 02:01:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:09,396 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:09,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:01:09,398 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:01:09,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-03 02:01:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:12,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1448 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:01:12,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:01:12,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:01:12,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [343329562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:12,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:01:12,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2022-11-03 02:01:12,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776519907] [2022-11-03 02:01:12,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:12,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:01:12,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:01:12,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:01:12,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:01:12,156 INFO L87 Difference]: Start difference. First operand 723 states and 897 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:01:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:12,297 INFO L93 Difference]: Finished difference Result 1303 states and 1625 transitions. [2022-11-03 02:01:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:01:12,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 174 [2022-11-03 02:01:12,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:12,302 INFO L225 Difference]: With dead ends: 1303 [2022-11-03 02:01:12,303 INFO L226 Difference]: Without dead ends: 687 [2022-11-03 02:01:12,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 510 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:01:12,304 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 281 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:12,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 904 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:12,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-11-03 02:01:12,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 687. [2022-11-03 02:01:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 659 states have (on average 1.197268588770865) internal successors, (789), 671 states have internal predecessors, (789), 23 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (28), 15 states have call predecessors, (28), 23 states have call successors, (28) [2022-11-03 02:01:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 840 transitions. [2022-11-03 02:01:12,342 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 840 transitions. Word has length 174 [2022-11-03 02:01:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:12,342 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 840 transitions. [2022-11-03 02:01:12,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 5 states have internal predecessors, (158), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:01:12,343 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 840 transitions. [2022-11-03 02:01:12,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-03 02:01:12,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:12,346 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:01:12,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:12,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:12,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:01:12,767 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash 993859612, now seen corresponding path program 1 times [2022-11-03 02:01:12,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:01:12,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627436266] [2022-11-03 02:01:12,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:12,769 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:01:12,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:01:12,771 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:01:12,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:01:14,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:14,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:01:14,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:14,802 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:01:14,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:14,928 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 02:01:14,928 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:01:14,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627436266] [2022-11-03 02:01:14,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627436266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:14,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1385944487] [2022-11-03 02:01:14,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:14,929 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:14,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:01:14,930 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:01:14,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-03 02:01:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:17,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1442 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:01:17,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 02:01:18,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:01:18,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1385944487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:18,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:01:18,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-03 02:01:18,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548153904] [2022-11-03 02:01:18,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:18,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:01:18,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:01:18,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:01:18,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:01:18,207 INFO L87 Difference]: Start difference. First operand 687 states and 840 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:01:20,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:24,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:01:29,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:29,249 INFO L93 Difference]: Finished difference Result 1496 states and 1835 transitions. [2022-11-03 02:01:29,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:01:29,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 174 [2022-11-03 02:01:29,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:29,258 INFO L225 Difference]: With dead ends: 1496 [2022-11-03 02:01:29,258 INFO L226 Difference]: Without dead ends: 931 [2022-11-03 02:01:29,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:01:29,260 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 543 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:29,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 623 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 149 Invalid, 2 Unknown, 0 Unchecked, 11.0s Time] [2022-11-03 02:01:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2022-11-03 02:01:29,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 554. [2022-11-03 02:01:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 531 states have (on average 1.1864406779661016) internal successors, (630), 538 states have internal predecessors, (630), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-03 02:01:29,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 671 transitions. [2022-11-03 02:01:29,298 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 671 transitions. Word has length 174 [2022-11-03 02:01:29,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:29,299 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 671 transitions. [2022-11-03 02:01:29,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:01:29,299 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 671 transitions. [2022-11-03 02:01:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-03 02:01:29,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:29,302 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 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] [2022-11-03 02:01:29,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:29,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:29,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:01:29,719 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:29,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:29,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1134978896, now seen corresponding path program 1 times [2022-11-03 02:01:29,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:01:29,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152563333] [2022-11-03 02:01:29,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:29,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:01:29,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:01:29,721 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:01:29,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:01:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:31,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:01:31,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:01:31,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 02:01:31,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:01:31,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152563333] [2022-11-03 02:01:31,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152563333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:31,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [927558481] [2022-11-03 02:01:31,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:31,945 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:31,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:01:31,946 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:01:31,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-03 02:01:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:34,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:01:34,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-03 02:01:35,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:01:35,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [927558481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:01:35,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:01:35,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-03 02:01:35,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232305604] [2022-11-03 02:01:35,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:01:35,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:01:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:01:35,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:01:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:01:35,030 INFO L87 Difference]: Start difference. First operand 554 states and 671 transitions. Second operand has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:01:35,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:35,198 INFO L93 Difference]: Finished difference Result 639 states and 783 transitions. [2022-11-03 02:01:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:01:35,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2022-11-03 02:01:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:35,202 INFO L225 Difference]: With dead ends: 639 [2022-11-03 02:01:35,202 INFO L226 Difference]: Without dead ends: 542 [2022-11-03 02:01:35,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:01:35,204 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 79 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:35,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 774 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:01:35,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-03 02:01:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 537. [2022-11-03 02:01:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 514 states have (on average 1.171206225680934) internal successors, (602), 521 states have internal predecessors, (602), 18 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (23), 14 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-03 02:01:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 643 transitions. [2022-11-03 02:01:35,240 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 643 transitions. Word has length 181 [2022-11-03 02:01:35,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:35,240 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 643 transitions. [2022-11-03 02:01:35,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.25) internal successors, (161), 4 states have internal predecessors, (161), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 02:01:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 643 transitions. [2022-11-03 02:01:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-03 02:01:35,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:35,244 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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, 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] [2022-11-03 02:01:35,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:35,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:35,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:35,667 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:35,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:35,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1251184802, now seen corresponding path program 1 times [2022-11-03 02:01:35,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:01:35,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794583192] [2022-11-03 02:01:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:35,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:01:35,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:01:35,669 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:01:35,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:01:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:37,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:01:37,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:37,873 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:01:37,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 02:01:38,000 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:01:38,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794583192] [2022-11-03 02:01:38,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794583192] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:38,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1347416593] [2022-11-03 02:01:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:38,001 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:38,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:01:38,002 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:01:38,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-03 02:01:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:42,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:01:42,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:01:42,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 02:01:42,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1347416593] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:42,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445609853] [2022-11-03 02:01:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:42,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:01:42,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:01:42,210 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:01:42,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-03 02:01:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:44,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:01:44,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 02:01:44,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-03 02:01:45,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445609853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:45,208 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:01:45,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2022-11-03 02:01:45,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902096543] [2022-11-03 02:01:45,208 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:01:45,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:01:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:01:45,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:01:45,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:01:45,215 INFO L87 Difference]: Start difference. First operand 537 states and 643 transitions. Second operand has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-03 02:01:46,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:01:46,999 INFO L93 Difference]: Finished difference Result 1837 states and 2277 transitions. [2022-11-03 02:01:46,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:01:47,000 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 181 [2022-11-03 02:01:47,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:01:47,006 INFO L225 Difference]: With dead ends: 1837 [2022-11-03 02:01:47,006 INFO L226 Difference]: Without dead ends: 1347 [2022-11-03 02:01:47,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:01:47,009 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1225 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:01:47,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 2350 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:01:47,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2022-11-03 02:01:47,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1197. [2022-11-03 02:01:47,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 1152 states have (on average 1.1822916666666667) internal successors, (1362), 1159 states have internal predecessors, (1362), 39 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (53), 35 states have call predecessors, (53), 39 states have call successors, (53) [2022-11-03 02:01:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1454 transitions. [2022-11-03 02:01:47,096 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1454 transitions. Word has length 181 [2022-11-03 02:01:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:01:47,096 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1454 transitions. [2022-11-03 02:01:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.75) internal successors, (393), 12 states have internal predecessors, (393), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-03 02:01:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1454 transitions. [2022-11-03 02:01:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-11-03 02:01:47,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:01:47,108 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2022-11-03 02:01:47,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:47,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:47,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:01:47,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:47,722 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:01:47,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:01:47,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1897704027, now seen corresponding path program 1 times [2022-11-03 02:01:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:01:47,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170629728] [2022-11-03 02:01:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:47,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:01:47,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:01:47,726 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:01:47,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:01:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:01:58,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 7499 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:01:58,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:01:58,825 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-03 02:01:58,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:01:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-11-03 02:01:59,152 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:01:59,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170629728] [2022-11-03 02:01:59,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170629728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:01:59,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [263694158] [2022-11-03 02:01:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:01:59,153 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:01:59,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:01:59,154 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:01:59,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-03 02:02:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:12,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 7499 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:02:12,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-03 02:02:12,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-11-03 02:02:12,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [263694158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:12,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228453573] [2022-11-03 02:02:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:12,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:12,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:12,213 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:12,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-03 02:02:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:22,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 7499 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:02:22,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:22,910 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-03 02:02:22,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-11-03 02:02:23,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228453573] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:23,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:02:23,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2022-11-03 02:02:23,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168911585] [2022-11-03 02:02:23,213 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:02:23,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 02:02:23,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:02:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 02:02:23,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:02:23,217 INFO L87 Difference]: Start difference. First operand 1197 states and 1454 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:02:25,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:25,119 INFO L93 Difference]: Finished difference Result 2373 states and 3017 transitions. [2022-11-03 02:02:25,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:02:25,120 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 483 [2022-11-03 02:02:25,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:25,125 INFO L225 Difference]: With dead ends: 2373 [2022-11-03 02:02:25,125 INFO L226 Difference]: Without dead ends: 1217 [2022-11-03 02:02:25,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2874 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 02:02:25,129 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 147 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:25,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 2595 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:02:25,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-11-03 02:02:25,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1209. [2022-11-03 02:02:25,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1164 states have (on average 1.1838487972508591) internal successors, (1378), 1171 states have internal predecessors, (1378), 39 states have call successors, (39), 3 states have call predecessors, (39), 4 states have return successors, (53), 35 states have call predecessors, (53), 39 states have call successors, (53) [2022-11-03 02:02:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1470 transitions. [2022-11-03 02:02:25,215 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1470 transitions. Word has length 483 [2022-11-03 02:02:25,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:25,216 INFO L495 AbstractCegarLoop]: Abstraction has 1209 states and 1470 transitions. [2022-11-03 02:02:25,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 2 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-03 02:02:25,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1470 transitions. [2022-11-03 02:02:25,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-11-03 02:02:25,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:25,229 INFO L195 NwaCegarLoop]: trace histogram [36, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2022-11-03 02:02:25,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-03 02:02:25,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:25,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2022-11-03 02:02:25,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:02:25,851 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:02:25,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash -886735707, now seen corresponding path program 2 times [2022-11-03 02:02:25,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:02:25,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787779349] [2022-11-03 02:02:25,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:02:25,855 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:02:25,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:02:25,856 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:02:25,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:02:37,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:02:37,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:02:38,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 7763 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:02:38,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-03 02:02:38,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-11-03 02:02:39,493 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:02:39,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787779349] [2022-11-03 02:02:39,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787779349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:39,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1736152898] [2022-11-03 02:02:39,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:02:39,494 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:02:39,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:02:39,495 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:02:39,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-03 02:02:54,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:02:54,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:02:54,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 7763 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:02:54,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:54,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-03 02:02:54,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-11-03 02:02:55,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1736152898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:55,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377442792] [2022-11-03 02:02:55,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:02:55,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:55,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:55,208 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:55,209 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-03 02:03:06,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 02:03:06,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:03:07,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 7763 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:03:07,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:03:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-11-03 02:03:08,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:10,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-11-03 02:03:10,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377442792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:10,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:03:10,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2022-11-03 02:03:10,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112456021] [2022-11-03 02:03:10,280 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:10,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 02:03:10,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:03:10,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 02:03:10,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 02:03:10,285 INFO L87 Difference]: Start difference. First operand 1209 states and 1470 transitions. Second operand has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-03 02:03:34,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:34,732 INFO L93 Difference]: Finished difference Result 4740 states and 6254 transitions. [2022-11-03 02:03:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-03 02:03:34,734 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 507 [2022-11-03 02:03:34,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:34,749 INFO L225 Difference]: With dead ends: 4740 [2022-11-03 02:03:34,749 INFO L226 Difference]: Without dead ends: 3574 [2022-11-03 02:03:34,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3075 GetRequests, 3006 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2022-11-03 02:03:34,754 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 4127 mSDsluCounter, 23424 mSDsCounter, 0 mSdLazyCounter, 5722 mSolverCounterSat, 946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4299 SdHoareTripleChecker+Valid, 24677 SdHoareTripleChecker+Invalid, 6668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 946 IncrementalHoareTripleChecker+Valid, 5722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:34,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4299 Valid, 24677 Invalid, 6668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [946 Valid, 5722 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2022-11-03 02:03:34,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2022-11-03 02:03:35,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3186. [2022-11-03 02:03:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 3081 states have (on average 1.1775397598182409) internal successors, (3628), 3088 states have internal predecessors, (3628), 99 states have call successors, (99), 3 states have call predecessors, (99), 4 states have return successors, (137), 95 states have call predecessors, (137), 99 states have call successors, (137) [2022-11-03 02:03:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 3864 transitions. [2022-11-03 02:03:35,042 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 3864 transitions. Word has length 507 [2022-11-03 02:03:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:35,042 INFO L495 AbstractCegarLoop]: Abstraction has 3186 states and 3864 transitions. [2022-11-03 02:03:35,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 28.88888888888889) internal successors, (1040), 36 states have internal predecessors, (1040), 4 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-03 02:03:35,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 3864 transitions. [2022-11-03 02:03:35,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2022-11-03 02:03:35,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:35,061 INFO L195 NwaCegarLoop]: trace histogram [66, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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, 1, 1, 1, 1] [2022-11-03 02:03:35,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-11-03 02:03:35,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:35,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:35,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:03:35,683 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:03:35,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:35,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1264729923, now seen corresponding path program 3 times [2022-11-03 02:03:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:03:35,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96105499] [2022-11-03 02:03:35,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:03:35,690 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:03:35,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:03:35,691 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:03:35,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca040fab-d26e-4e7e-bf57-74d2962e1c8e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process