./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW --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 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 --- 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-4e7fbc6 [2022-11-23 14:22:15,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:22:15,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:22:15,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:22:15,314 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:22:15,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:22:15,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:22:15,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:22:15,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:22:15,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:22:15,332 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:22:15,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:22:15,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:22:15,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:22:15,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:22:15,343 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:22:15,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:22:15,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:22:15,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:22:15,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:22:15,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:22:15,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:22:15,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:22:15,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:22:15,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:22:15,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:22:15,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:22:15,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:22:15,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:22:15,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:22:15,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:22:15,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:22:15,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:22:15,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:22:15,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:22:15,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:22:15,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:22:15,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:22:15,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:22:15,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:22:15,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:22:15,388 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:22:15,430 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:22:15,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:22:15,444 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:22:15,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:22:15,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:22:15,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:22:15,447 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:22:15,448 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:22:15,448 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:22:15,448 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:22:15,449 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:22:15,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:22:15,450 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:22:15,451 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:22:15,451 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:22:15,451 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:22:15,452 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:22:15,452 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:22:15,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:22:15,453 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:22:15,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:22:15,454 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:22:15,454 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:22:15,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:22:15,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:22:15,455 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:22:15,455 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:22:15,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:22:15,456 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:22:15,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:22:15,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:22:15,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:22:15,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:15,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:22:15,458 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:22:15,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:22:15,459 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:22:15,459 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:22:15,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:22:15,460 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:22:15,460 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:22:15,461 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_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 [2022-11-23 14:22:15,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:22:15,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:22:15,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:22:15,774 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:22:15,775 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:22:15,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-11-23 14:22:18,983 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:22:19,409 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:22:19,410 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-11-23 14:22:19,426 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/data/27f437317/fcf8394c951a488a850977388b93004e/FLAG8d10e5f59 [2022-11-23 14:22:19,442 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/data/27f437317/fcf8394c951a488a850977388b93004e [2022-11-23 14:22:19,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:22:19,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:22:19,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:19,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:22:19,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:22:19,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:19" (1/1) ... [2022-11-23 14:22:19,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468d77c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:19, skipping insertion in model container [2022-11-23 14:22:19,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:22:19" (1/1) ... [2022-11-23 14:22:19,465 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:22:19,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:22:20,156 WARN L237 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_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-11-23 14:22:20,381 WARN L237 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_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-11-23 14:22:20,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:20,401 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:22:20,437 WARN L237 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_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-11-23 14:22:20,607 WARN L237 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_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-11-23 14:22:20,613 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:22:20,649 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:22:20,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20 WrapperNode [2022-11-23 14:22:20,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:22:20,651 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:20,651 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:22:20,652 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:22:20,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,794 INFO L138 Inliner]: procedures = 177, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-11-23 14:22:20,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:22:20,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:22:20,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:22:20,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:22:20,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,906 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:22:20,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:22:20,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:22:20,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:22:20,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (1/1) ... [2022-11-23 14:22:20,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:22:20,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:20,963 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:22:20,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:22:21,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:22:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 14:22:21,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 14:22:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:22:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:22:21,019 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:22:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:22:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:22:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:22:21,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:22:21,020 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:22:21,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:22:21,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:22:21,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:22:21,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:22:21,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:22:21,503 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:22:21,506 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:22:23,628 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:22:24,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:22:24,232 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-11-23 14:22:24,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:24 BoogieIcfgContainer [2022-11-23 14:22:24,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:22:24,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:22:24,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:22:24,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:22:24,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:22:19" (1/3) ... [2022-11-23 14:22:24,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dad84b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:24, skipping insertion in model container [2022-11-23 14:22:24,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:22:20" (2/3) ... [2022-11-23 14:22:24,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dad84b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:22:24, skipping insertion in model container [2022-11-23 14:22:24,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:22:24" (3/3) ... [2022-11-23 14:22:24,253 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-1.i [2022-11-23 14:22:24,275 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:22:24,276 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:22:24,348 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:22:24,356 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;@4d1aee3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:22:24,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:22:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 135 states have (on average 1.8148148148148149) internal successors, (245), 142 states have internal predecessors, (245), 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) [2022-11-23 14:22:24,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:22:24,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:24,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:22:24,371 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:24,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:24,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1961289775, now seen corresponding path program 1 times [2022-11-23 14:22:24,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:24,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470610809] [2022-11-23 14:22:24,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:24,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:24,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:24,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470610809] [2022-11-23 14:22:24,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 14:22:24,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749853740] [2022-11-23 14:22:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:24,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:24,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:24,576 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:24,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:22:24,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:24,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 14:22:24,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:24,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:24,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:22:24,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749853740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:24,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:24,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:22:24,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950037423] [2022-11-23 14:22:24,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:24,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:22:24,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:24,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:22:24,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:22:24,975 INFO L87 Difference]: Start difference. First operand has 151 states, 135 states have (on average 1.8148148148148149) internal successors, (245), 142 states have internal predecessors, (245), 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) [2022-11-23 14:22:26,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:22:26,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:26,890 INFO L93 Difference]: Finished difference Result 301 states and 538 transitions. [2022-11-23 14:22:26,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:22:26,898 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 [2022-11-23 14:22:26,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:26,910 INFO L225 Difference]: With dead ends: 301 [2022-11-23 14:22:26,910 INFO L226 Difference]: Without dead ends: 150 [2022-11-23 14:22:26,914 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 [2022-11-23 14:22:26,918 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:26,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 14:22:26,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-23 14:22:26,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-11-23 14:22:26,978 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) [2022-11-23 14:22:26,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 183 transitions. [2022-11-23 14:22:26,983 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 183 transitions. Word has length 6 [2022-11-23 14:22:26,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:26,984 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 183 transitions. [2022-11-23 14:22:26,984 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) [2022-11-23 14:22:26,984 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 183 transitions. [2022-11-23 14:22:26,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 14:22:26,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:26,987 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:22:27,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:27,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 14:22:27,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:27,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:27,196 INFO L85 PathProgramCache]: Analyzing trace with hash -986732469, now seen corresponding path program 1 times [2022-11-23 14:22:27,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:27,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320176456] [2022-11-23 14:22:27,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:27,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:27,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:27,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320176456] [2022-11-23 14:22:27,260 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-23 14:22:27,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344321094] [2022-11-23 14:22:27,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:27,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:27,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:27,274 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:27,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:22:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:27,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:22:27,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:27,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:27,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:22:27,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344321094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:27,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:27,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:22:27,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062496683] [2022-11-23 14:22:27,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:27,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:22:27,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:27,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:22:27,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:22:27,619 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) [2022-11-23 14:22:30,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:22:30,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:30,873 INFO L93 Difference]: Finished difference Result 342 states and 425 transitions. [2022-11-23 14:22:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:22:30,876 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 [2022-11-23 14:22:30,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:30,880 INFO L225 Difference]: With dead ends: 342 [2022-11-23 14:22:30,880 INFO L226 Difference]: Without dead ends: 290 [2022-11-23 14:22:30,881 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 [2022-11-23 14:22:30,882 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 148 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:30,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 351 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-11-23 14:22:30,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-11-23 14:22:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 151. [2022-11-23 14:22:30,907 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) [2022-11-23 14:22:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 184 transitions. [2022-11-23 14:22:30,909 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 184 transitions. Word has length 17 [2022-11-23 14:22:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:30,910 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 184 transitions. [2022-11-23 14:22:30,910 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) [2022-11-23 14:22:30,910 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 184 transitions. [2022-11-23 14:22:30,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 14:22:30,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:30,913 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] [2022-11-23 14:22:30,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:22:31,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:31,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:22:31,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash -72453235, now seen corresponding path program 1 times [2022-11-23 14:22:31,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:31,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762518431] [2022-11-23 14:22:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:31,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:31,511 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:22:31,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190535141] [2022-11-23 14:22:31,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:31,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:22:31,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:22:31,522 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:22:31,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:22:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:32,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:22:32,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:22:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:33,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:22:33,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:22:33,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:33,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762518431] [2022-11-23 14:22:33,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:22:33,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190535141] [2022-11-23 14:22:33,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190535141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:22:33,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [391277879] [2022-11-23 14:22:33,327 INFO L159 IcfgInterpreter]: Started Sifa with 61 locations of interest [2022-11-23 14:22:33,327 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:22:33,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:22:33,338 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:22:33,339 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:22:33,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:33,519 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-23 14:22:33,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-23 14:22:33,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:33,566 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:22:33,566 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:22:33,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:33,639 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:22:33,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:33,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:33,691 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:22:33,692 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:22:33,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:33,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:33,719 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:22:33,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:33,737 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:22:33,741 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:22:33,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:33,767 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:22:34,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-23 14:22:34,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-23 14:22:34,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:34,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-11-23 14:22:34,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-23 14:22:35,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-23 14:22:35,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-23 14:22:35,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-23 14:22:35,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:22:35,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-11-23 14:22:35,464 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:22:44,332 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 235 DAG size of output: 220 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:22:52,020 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 251 DAG size of output: 236 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:22:52,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [391277879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:52,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:22:52,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [3, 3] total 11 [2022-11-23 14:22:52,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487552269] [2022-11-23 14:22:52,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:52,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:22:52,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:52,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:22:52,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=69, Unknown=2, NotChecked=0, Total=132 [2022-11-23 14:22:52,031 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) [2022-11-23 14:22:57,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:23:00,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:23:02,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:23:05,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:23:07,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:23:07,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:07,806 INFO L93 Difference]: Finished difference Result 313 states and 382 transitions. [2022-11-23 14:23:07,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:23:07,807 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 [2022-11-23 14:23:07,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:07,808 INFO L225 Difference]: With dead ends: 313 [2022-11-23 14:23:07,809 INFO L226 Difference]: Without dead ends: 164 [2022-11-23 14:23:07,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=71, Invalid=83, Unknown=2, NotChecked=0, Total=156 [2022-11-23 14:23:07,811 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 9 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:07,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 402 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 5 Unknown, 0 Unchecked, 12.3s Time] [2022-11-23 14:23:07,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-23 14:23:07,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2022-11-23 14:23:07,840 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) [2022-11-23 14:23:07,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 194 transitions. [2022-11-23 14:23:07,843 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 194 transitions. Word has length 61 [2022-11-23 14:23:07,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:07,843 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 194 transitions. [2022-11-23 14:23:07,844 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) [2022-11-23 14:23:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 194 transitions. [2022-11-23 14:23:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 14:23:07,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:07,848 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] [2022-11-23 14:23:07,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:23:08,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:23:08,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:23:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash -68250796, now seen corresponding path program 1 times [2022-11-23 14:23:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:08,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452276158] [2022-11-23 14:23:08,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:08,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:08,302 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:23:08,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1513931825] [2022-11-23 14:23:08,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:08,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:23:08,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:23:08,305 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:23:08,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:23:09,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:09,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:23:09,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:23:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 14:23:09,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:23:10,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 14:23:10,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:10,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452276158] [2022-11-23 14:23:10,116 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:23:10,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513931825] [2022-11-23 14:23:10,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513931825] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:23:10,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [726088213] [2022-11-23 14:23:10,121 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-23 14:23:10,121 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:23:10,122 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:23:10,122 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:23:10,123 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:23:10,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:10,279 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:23:10,280 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:10,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:10,297 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:10,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:10,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:10,372 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-23 14:23:10,373 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:10,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:10,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:10,439 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:23:10,440 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:10,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:10,470 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:23:10,474 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:10,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:10,502 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:10,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:10,527 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:23:11,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-23 14:23:11,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-23 14:23:11,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-23 14:23:11,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-11-23 14:23:11,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-23 14:23:11,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 14:23:11,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 14:23:11,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-23 14:23:11,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 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 [2022-11-23 14:23:11,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,598 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-23 14:23:11,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-11-23 14:23:11,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,723 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-23 14:23:11,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-11-23 14:23:11,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:11,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 14:23:11,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 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 [2022-11-23 14:23:12,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-23 14:23:12,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-23 14:23:12,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9896988 treesize of output 5376290 [2022-11-23 14:23:12,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-23 14:23:12,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-23 14:23:12,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-11-23 14:23:13,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-11-23 14:23:13,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-23 14:23:13,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 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 [2022-11-23 14:23:13,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,361 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-23 14:23:13,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-11-23 14:23:13,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,488 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-23 14:23:13,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-11-23 14:23:13,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:23:13,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9897003 treesize of output 5376293 [2022-11-23 14:23:13,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 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 [2022-11-23 14:23:14,073 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 253 for LOIs [2022-11-23 14:23:14,197 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:23:22,816 WARN L233 SmtUtils]: Spent 5.37s on a formula simplification. DAG size of input: 235 DAG size of output: 220 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:23:30,296 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 251 DAG size of output: 236 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:23:40,112 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 262 DAG size of output: 248 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:23:54,354 WARN L233 SmtUtils]: Spent 7.98s on a formula simplification. DAG size of input: 284 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:24:09,398 WARN L233 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 284 DAG size of output: 262 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:24:10,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [726088213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:10,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:24:10,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [4, 4] total 17 [2022-11-23 14:24:10,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253440249] [2022-11-23 14:24:10,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:10,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:24:10,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:10,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:24:10,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=172, Unknown=10, NotChecked=0, Total=272 [2022-11-23 14:24:10,194 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) [2022-11-23 14:24:14,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:16,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:18,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:20,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:22,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:24,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:26,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:28,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:30,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:36,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:24:43,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:45,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:24:47,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-23 14:24:49,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:24:49,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:49,051 INFO L93 Difference]: Finished difference Result 315 states and 384 transitions. [2022-11-23 14:24:49,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 14:24:49,051 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 [2022-11-23 14:24:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:49,053 INFO L225 Difference]: With dead ends: 315 [2022-11-23 14:24:49,053 INFO L226 Difference]: Without dead ends: 166 [2022-11-23 14:24:49,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 203 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=100, Invalid=196, Unknown=10, NotChecked=0, Total=306 [2022-11-23 14:24:49,055 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 10 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 6 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:49,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 812 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 518 Invalid, 9 Unknown, 0 Unchecked, 37.6s Time] [2022-11-23 14:24:49,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-23 14:24:49,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-11-23 14:24:49,086 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) [2022-11-23 14:24:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2022-11-23 14:24:49,088 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 74 [2022-11-23 14:24:49,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:49,088 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2022-11-23 14:24:49,088 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) [2022-11-23 14:24:49,089 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2022-11-23 14:24:49,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-23 14:24:49,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:49,091 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] [2022-11-23 14:24:49,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:24:49,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:24:49,304 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:24:49,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash 321637894, now seen corresponding path program 1 times [2022-11-23 14:24:49,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:49,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423448096] [2022-11-23 14:24:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:49,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:49,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:24:49,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831954005] [2022-11-23 14:24:49,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:49,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:24:49,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:24:49,481 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:24:49,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:24:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:50,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 2264 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:24:50,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:24:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 14:24:50,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:24:51,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 14:24:51,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:51,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423448096] [2022-11-23 14:24:51,004 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:24:51,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831954005] [2022-11-23 14:24:51,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831954005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:24:51,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [864788687] [2022-11-23 14:24:51,008 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2022-11-23 14:24:51,008 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:24:51,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:24:51,009 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:24:51,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:24:51,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,113 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-23 14:24:51,114 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:51,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,126 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:51,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,183 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-23 14:24:51,184 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:51,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-23 14:24:51,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,218 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:24:51,218 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:51,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,238 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:51,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,255 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:51,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,309 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-23 14:24:51,310 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:51,638 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-23 14:24:51,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 [2022-11-23 14:24:51,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 9896990 treesize of output 5376278 [2022-11-23 14:24:51,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 25 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 9075036 treesize of output 5376290 [2022-11-23 14:24:51,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-23 14:24:51,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 14:24:51,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:51,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 14:24:51,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 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 [2022-11-23 14:24:52,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 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 [2022-11-23 14:24:52,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 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 [2022-11-23 14:24:52,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,136 INFO L321 Elim1Store]: treesize reduction 48, result has 48.9 percent of original size [2022-11-23 14:24:52,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 74 [2022-11-23 14:24:52,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,217 INFO L321 Elim1Store]: treesize reduction 90, result has 33.8 percent of original size [2022-11-23 14:24:52,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 85 [2022-11-23 14:24:52,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,280 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 32 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075051 treesize of output 5376293 [2022-11-23 14:24:52,453 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:52,457 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:52,462 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:52,517 INFO L321 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2022-11-23 14:24:52,518 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:52,552 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:24:52,552 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:52,584 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 14:24:52,584 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:52,629 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:52,639 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:52,646 INFO L350 Elim1Store]: Elim1 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 [2022-11-23 14:24:52,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-11-23 14:24:52,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-23 14:24:52,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-23 14:24:52,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 14:24:52,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 9075032 treesize of output 5376218 [2022-11-23 14:24:53,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 42 [2022-11-23 14:24:53,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2022-11-23 14:24:56,148 INFO L217 Elim1Store]: Index analysis took 2826 ms [2022-11-23 14:25:04,722 WARN L233 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 109 DAG size of output: 31 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-23 14:25:04,723 INFO L321 Elim1Store]: treesize reduction 190, result has 18.1 percent of original size [2022-11-23 14:25:04,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 10752723 treesize of output 10752742 [2022-11-23 14:25:07,172 INFO L217 Elim1Store]: Index analysis took 2182 ms [2022-11-23 14:25:09,726 INFO L321 Elim1Store]: treesize reduction 87, result has 5.4 percent of original size [2022-11-23 14:25:09,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 10752718 treesize of output 10752722 [2022-11-23 14:25:30,787 INFO L217 Elim1Store]: Index analysis took 1164 ms [2022-11-23 14:26:31,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:26:32,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:26:32,058 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 159485 column 7: canceled at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 159485 column 7: canceled at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1458) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.push(UndoableWrapperScript.java:54) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.pushContext(SimplifyDDA.java:736) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:389) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:648) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:318) 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) ... 59 more [2022-11-23 14:26:32,064 INFO L158 Benchmark]: Toolchain (without parser) took 252617.26ms. Allocated memory was 153.1MB in the beginning and 12.2GB in the end (delta: 12.1GB). Free memory was 118.4MB in the beginning and 9.9GB in the end (delta: -9.7GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2022-11-23 14:26:32,064 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 153.1MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:26:32,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1201.84ms. Allocated memory is still 153.1MB. Free memory was 117.9MB in the beginning and 81.2MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2022-11-23 14:26:32,065 INFO L158 Benchmark]: Boogie Procedure Inliner took 144.05ms. Allocated memory is still 153.1MB. Free memory was 81.2MB in the beginning and 71.7MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:26:32,065 INFO L158 Benchmark]: Boogie Preprocessor took 129.06ms. Allocated memory is still 153.1MB. Free memory was 71.7MB in the beginning and 61.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:26:32,065 INFO L158 Benchmark]: RCFGBuilder took 3311.09ms. Allocated memory was 153.1MB in the beginning and 201.3MB in the end (delta: 48.2MB). Free memory was 61.3MB in the beginning and 83.2MB in the end (delta: -21.9MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2022-11-23 14:26:32,066 INFO L158 Benchmark]: TraceAbstraction took 247824.03ms. Allocated memory was 201.3MB in the beginning and 12.2GB in the end (delta: 12.0GB). Free memory was 82.2MB in the beginning and 9.9GB in the end (delta: -9.8GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. [2022-11-23 14:26:32,067 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 153.1MB. Free memory is still 121.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1201.84ms. Allocated memory is still 153.1MB. Free memory was 117.9MB in the beginning and 81.2MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 144.05ms. Allocated memory is still 153.1MB. Free memory was 81.2MB in the beginning and 71.7MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 129.06ms. Allocated memory is still 153.1MB. Free memory was 71.7MB in the beginning and 61.3MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3311.09ms. Allocated memory was 153.1MB in the beginning and 201.3MB in the end (delta: 48.2MB). Free memory was 61.3MB in the beginning and 83.2MB in the end (delta: -21.9MB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * TraceAbstraction took 247824.03ms. Allocated memory was 201.3MB in the beginning and 12.2GB in the end (delta: 12.0GB). Free memory was 82.2MB in the beginning and 9.9GB in the end (delta: -9.8GB). Peak memory consumption was 3.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 159485 column 7: canceled de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 159485 column 7: canceled: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-23 14:26:32,283 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-23 14:26:32,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 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_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW --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 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 --- 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-4e7fbc6 [2022-11-23 14:26:35,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:26:35,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:26:35,075 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:26:35,075 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:26:35,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:26:35,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:26:35,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:26:35,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:26:35,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:26:35,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:26:35,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:26:35,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:26:35,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:26:35,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:26:35,094 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:26:35,095 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:26:35,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:26:35,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:26:35,100 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:26:35,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:26:35,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:26:35,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:26:35,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:26:35,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:26:35,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:26:35,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:26:35,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:26:35,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:26:35,113 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:26:35,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:26:35,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:26:35,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:26:35,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:26:35,132 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:26:35,132 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:26:35,133 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:26:35,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:26:35,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:26:35,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:26:35,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:26:35,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 14:26:35,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:26:35,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:26:35,172 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:26:35,172 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:26:35,173 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:26:35,173 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:26:35,174 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:26:35,174 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:26:35,174 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:26:35,175 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:26:35,176 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:26:35,176 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:26:35,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:26:35,177 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:26:35,177 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:26:35,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:26:35,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:26:35,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:26:35,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:26:35,179 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:26:35,179 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:26:35,179 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:26:35,179 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:26:35,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:26:35,180 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:26:35,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:26:35,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:26:35,181 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:26:35,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:26:35,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:26:35,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:26:35,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:26:35,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:26:35,182 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:26:35,182 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:26:35,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:26:35,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:26:35,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:26:35,183 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_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 [2022-11-23 14:26:35,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:26:35,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:26:35,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:26:35,614 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:26:35,615 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:26:35,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-11-23 14:26:38,831 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:26:39,172 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:26:39,173 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-11-23 14:26:39,189 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/data/eae9621ef/b84e5ad6409c43bc91637864b0a26187/FLAGaaf893d13 [2022-11-23 14:26:39,219 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/data/eae9621ef/b84e5ad6409c43bc91637864b0a26187 [2022-11-23 14:26:39,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:26:39,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:26:39,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:26:39,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:26:39,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:26:39,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:39" (1/1) ... [2022-11-23 14:26:39,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34daee57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:39, skipping insertion in model container [2022-11-23 14:26:39,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:39" (1/1) ... [2022-11-23 14:26:39,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:26:39,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:26:39,823 WARN L237 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_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-11-23 14:26:39,978 WARN L237 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_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-11-23 14:26:39,986 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:26:39,999 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 14:26:40,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:26:40,027 WARN L237 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_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-11-23 14:26:40,130 WARN L237 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_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-11-23 14:26:40,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:26:40,155 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:26:40,206 WARN L237 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_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-11-23 14:26:40,302 WARN L237 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_330158d1-e101-4cbd-973e-7faf3f94539a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-11-23 14:26:40,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:26:40,365 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:26:40,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40 WrapperNode [2022-11-23 14:26:40,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:26:40,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:26:40,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:26:40,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:26:40,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,514 INFO L138 Inliner]: procedures = 180, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-11-23 14:26:40,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:26:40,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:26:40,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:26:40,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:26:40,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,633 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:26:40,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:26:40,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:26:40,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:26:40,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (1/1) ... [2022-11-23 14:26:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:26:40,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:26:40,687 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:26:40,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:26:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-23 14:26:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 14:26:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 14:26:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 14:26:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:26:40,734 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:26:40,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:26:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:26:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:26:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:26:40,735 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:26:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:26:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:26:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-23 14:26:40,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:26:40,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:26:40,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:26:41,088 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:26:41,090 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:26:54,621 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:26:54,637 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:26:54,638 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-11-23 14:26:54,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:54 BoogieIcfgContainer [2022-11-23 14:26:54,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:26:54,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:26:54,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:26:54,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:26:54,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:39" (1/3) ... [2022-11-23 14:26:54,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efb5c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:54, skipping insertion in model container [2022-11-23 14:26:54,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:40" (2/3) ... [2022-11-23 14:26:54,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efb5c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:54, skipping insertion in model container [2022-11-23 14:26:54,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:54" (3/3) ... [2022-11-23 14:26:54,655 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-1.i [2022-11-23 14:26:54,677 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:26:54,678 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-23 14:26:54,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:26:54,767 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;@4bd9cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:26:54,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-23 14:26:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 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) [2022-11-23 14:26:54,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:26:54,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:54,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:54,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash 678032416, now seen corresponding path program 1 times [2022-11-23 14:26:54,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:26:54,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [364961013] [2022-11-23 14:26:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:54,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:26:54,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:26:54,834 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:26:54,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 14:26:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:55,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 14:26:55,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:26:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:55,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:26:55,222 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:26:55,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [364961013] [2022-11-23 14:26:55,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [364961013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:55,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:55,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:26:55,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351501359] [2022-11-23 14:26:55,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:55,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:26:55,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:26:55,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:26:55,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:26:55,285 INFO L87 Difference]: Start difference. First operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 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) [2022-11-23 14:26:55,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:55,369 INFO L93 Difference]: Finished difference Result 506 states and 857 transitions. [2022-11-23 14:26:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:26:55,371 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 [2022-11-23 14:26:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:55,380 INFO L225 Difference]: With dead ends: 506 [2022-11-23 14:26:55,380 INFO L226 Difference]: Without dead ends: 250 [2022-11-23 14:26:55,383 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 [2022-11-23 14:26:55,386 INFO L413 NwaCegarLoop]: 335 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, 335 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 [2022-11-23 14:26:55,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:26:55,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-23 14:26:55,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-11-23 14:26:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 241 states have internal predecessors, (309), 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) [2022-11-23 14:26:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 331 transitions. [2022-11-23 14:26:55,457 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 331 transitions. Word has length 8 [2022-11-23 14:26:55,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:55,459 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 331 transitions. [2022-11-23 14:26:55,460 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) [2022-11-23 14:26:55,460 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 331 transitions. [2022-11-23 14:26:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-23 14:26:55,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:55,464 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] [2022-11-23 14:26:55,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-23 14:26:55,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:26:55,677 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:55,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:55,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1368100487, now seen corresponding path program 1 times [2022-11-23 14:26:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:26:55,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269422057] [2022-11-23 14:26:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:55,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:26:55,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:26:55,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:26:55,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 14:26:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:55,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:26:55,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:26:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:55,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:26:55,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:26:55,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269422057] [2022-11-23 14:26:55,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269422057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:55,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:55,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:26:55,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128927326] [2022-11-23 14:26:55,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:55,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:26:55,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:26:55,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:26:55,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:26:55,979 INFO L87 Difference]: Start difference. First operand 250 states and 331 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) [2022-11-23 14:26:56,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:56,322 INFO L93 Difference]: Finished difference Result 565 states and 756 transitions. [2022-11-23 14:26:56,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:26:56,327 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 [2022-11-23 14:26:56,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:56,330 INFO L225 Difference]: With dead ends: 565 [2022-11-23 14:26:56,330 INFO L226 Difference]: Without dead ends: 487 [2022-11-23 14:26:56,331 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 [2022-11-23 14:26:56,333 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 294 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 660 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 [2022-11-23 14:26:56,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 660 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:26:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-23 14:26:56,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 251. [2022-11-23 14:26:56,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 242 states have internal predecessors, (310), 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) [2022-11-23 14:26:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 332 transitions. [2022-11-23 14:26:56,355 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 332 transitions. Word has length 42 [2022-11-23 14:26:56,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:56,356 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 332 transitions. [2022-11-23 14:26:56,356 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) [2022-11-23 14:26:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 332 transitions. [2022-11-23 14:26:56,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 14:26:56,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:56,361 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] [2022-11-23 14:26:56,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:26:56,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:26:56,576 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:56,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:56,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1909784615, now seen corresponding path program 1 times [2022-11-23 14:26:56,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:26:56,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536574453] [2022-11-23 14:26:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:56,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:26:56,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:26:56,580 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:26:56,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 14:26:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:58,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:26:58,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:26:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:58,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:26:58,833 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:26:58,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536574453] [2022-11-23 14:26:58,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536574453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:58,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:58,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:26:58,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696874370] [2022-11-23 14:26:58,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:58,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:26:58,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:26:58,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:26:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:26:58,836 INFO L87 Difference]: Start difference. First operand 251 states and 332 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) [2022-11-23 14:26:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:58,992 INFO L93 Difference]: Finished difference Result 508 states and 673 transitions. [2022-11-23 14:26:58,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:26:58,993 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 [2022-11-23 14:26:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:58,995 INFO L225 Difference]: With dead ends: 508 [2022-11-23 14:26:58,995 INFO L226 Difference]: Without dead ends: 260 [2022-11-23 14:26:58,996 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 [2022-11-23 14:26:58,998 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 292 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:58,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 631 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:26:59,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-23 14:26:59,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 254. [2022-11-23 14:26:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 239 states have (on average 1.2761506276150627) internal successors, (305), 245 states have internal predecessors, (305), 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) [2022-11-23 14:26:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 327 transitions. [2022-11-23 14:26:59,017 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 327 transitions. Word has length 140 [2022-11-23 14:26:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:59,018 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 327 transitions. [2022-11-23 14:26:59,018 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) [2022-11-23 14:26:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 327 transitions. [2022-11-23 14:26:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-23 14:26:59,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:59,021 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] [2022-11-23 14:26:59,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:26:59,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:26:59,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:59,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:59,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1562910771, now seen corresponding path program 1 times [2022-11-23 14:26:59,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:26:59,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191898799] [2022-11-23 14:26:59,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:59,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:26:59,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:26:59,249 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:26:59,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 14:27:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:01,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:27:01,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:01,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:01,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:01,799 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:01,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191898799] [2022-11-23 14:27:01,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191898799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:01,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:01,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:27:01,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69066632] [2022-11-23 14:27:01,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:01,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:27:01,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:01,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:27:01,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:27:01,803 INFO L87 Difference]: Start difference. First operand 254 states and 327 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) [2022-11-23 14:27:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:02,486 INFO L93 Difference]: Finished difference Result 546 states and 697 transitions. [2022-11-23 14:27:02,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:27:02,492 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 [2022-11-23 14:27:02,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:02,494 INFO L225 Difference]: With dead ends: 546 [2022-11-23 14:27:02,494 INFO L226 Difference]: Without dead ends: 295 [2022-11-23 14:27:02,495 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 [2022-11-23 14:27:02,496 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 11 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 623 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 [2022-11-23 14:27:02,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 623 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:27:02,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-23 14:27:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-11-23 14:27:02,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 280 states have (on average 1.25) internal successors, (350), 286 states have internal predecessors, (350), 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) [2022-11-23 14:27:02,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 372 transitions. [2022-11-23 14:27:02,534 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 372 transitions. Word has length 140 [2022-11-23 14:27:02,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:02,537 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 372 transitions. [2022-11-23 14:27:02,538 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) [2022-11-23 14:27:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 372 transitions. [2022-11-23 14:27:02,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-23 14:27:02,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:02,546 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] [2022-11-23 14:27:02,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:02,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:02,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:02,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:02,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1120622574, now seen corresponding path program 1 times [2022-11-23 14:27:02,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:02,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697100316] [2022-11-23 14:27:02,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:02,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:02,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:02,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:02,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 14:27:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:04,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:27:04,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:04,723 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:27:04,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:04,728 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:04,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697100316] [2022-11-23 14:27:04,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697100316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:04,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:04,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:27:04,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063551672] [2022-11-23 14:27:04,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:04,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:27:04,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:04,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:27:04,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:27:04,736 INFO L87 Difference]: Start difference. First operand 295 states and 372 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) [2022-11-23 14:27:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:04,842 INFO L93 Difference]: Finished difference Result 549 states and 705 transitions. [2022-11-23 14:27:04,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:27:04,843 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 [2022-11-23 14:27:04,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:04,846 INFO L225 Difference]: With dead ends: 549 [2022-11-23 14:27:04,846 INFO L226 Difference]: Without dead ends: 298 [2022-11-23 14:27:04,847 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 [2022-11-23 14:27:04,848 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 2 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 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 [2022-11-23 14:27:04,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:27:04,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-11-23 14:27:04,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-11-23 14:27:04,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 282 states have (on average 1.25177304964539) internal successors, (353), 289 states have internal predecessors, (353), 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) [2022-11-23 14:27:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 377 transitions. [2022-11-23 14:27:04,870 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 377 transitions. Word has length 155 [2022-11-23 14:27:04,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:04,870 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 377 transitions. [2022-11-23 14:27:04,871 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) [2022-11-23 14:27:04,871 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 377 transitions. [2022-11-23 14:27:04,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 14:27:04,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:04,874 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] [2022-11-23 14:27:04,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:05,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:05,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:05,092 INFO L85 PathProgramCache]: Analyzing trace with hash -852886192, now seen corresponding path program 1 times [2022-11-23 14:27:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:05,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190557808] [2022-11-23 14:27:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:05,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:05,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:05,095 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:05,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 14:27:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:06,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:27:06,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:07,022 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:27:07,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:27:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:27:07,171 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:07,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190557808] [2022-11-23 14:27:07,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190557808] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:27:07,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [763314338] [2022-11-23 14:27:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:07,172 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:27:07,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:27:07,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:27:07,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-23 14:27:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:09,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:27:09,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:27:09,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:09,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [763314338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:09,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:27:09,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-23 14:27:09,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478309784] [2022-11-23 14:27:09,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:09,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:27:09,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:09,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:27:09,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:27:09,378 INFO L87 Difference]: Start difference. First operand 298 states and 377 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) [2022-11-23 14:27:09,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:09,550 INFO L93 Difference]: Finished difference Result 573 states and 737 transitions. [2022-11-23 14:27:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:27:09,551 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 [2022-11-23 14:27:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:09,556 INFO L225 Difference]: With dead ends: 573 [2022-11-23 14:27:09,557 INFO L226 Difference]: Without dead ends: 319 [2022-11-23 14:27:09,558 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 [2022-11-23 14:27:09,561 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 10 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:09,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 585 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:27:09,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-23 14:27:09,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 318. [2022-11-23 14:27:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 302 states have (on average 1.2350993377483444) internal successors, (373), 309 states have internal predecessors, (373), 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) [2022-11-23 14:27:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 397 transitions. [2022-11-23 14:27:09,578 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 397 transitions. Word has length 157 [2022-11-23 14:27:09,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:09,578 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 397 transitions. [2022-11-23 14:27:09,579 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) [2022-11-23 14:27:09,579 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 397 transitions. [2022-11-23 14:27:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-23 14:27:09,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:09,581 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] [2022-11-23 14:27:09,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:09,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:09,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:27:09,995 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:09,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:09,995 INFO L85 PathProgramCache]: Analyzing trace with hash 622348492, now seen corresponding path program 1 times [2022-11-23 14:27:09,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:09,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808220114] [2022-11-23 14:27:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:09,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:09,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:09,998 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:10,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-23 14:27:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:12,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:27:12,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:27:12,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:27:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:27:12,241 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:12,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808220114] [2022-11-23 14:27:12,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808220114] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:27:12,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1047299014] [2022-11-23 14:27:12,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:12,242 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:27:12,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:27:12,244 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:27:12,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-23 14:27:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:14,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:27:14,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 14:27:15,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:15,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1047299014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:15,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:27:15,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-23 14:27:15,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230729406] [2022-11-23 14:27:15,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:15,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:27:15,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:15,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:27:15,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:27:15,115 INFO L87 Difference]: Start difference. First operand 318 states and 397 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) [2022-11-23 14:27:15,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:15,925 INFO L93 Difference]: Finished difference Result 826 states and 1048 transitions. [2022-11-23 14:27:15,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:27:15,926 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 [2022-11-23 14:27:15,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:15,929 INFO L225 Difference]: With dead ends: 826 [2022-11-23 14:27:15,929 INFO L226 Difference]: Without dead ends: 552 [2022-11-23 14:27:15,930 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 [2022-11-23 14:27:15,931 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 227 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:15,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 724 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:27:15,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-23 14:27:15,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 550. [2022-11-23 14:27:15,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 525 states have (on average 1.2419047619047618) internal successors, (652), 537 states have internal predecessors, (652), 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) [2022-11-23 14:27:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 696 transitions. [2022-11-23 14:27:15,961 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 696 transitions. Word has length 157 [2022-11-23 14:27:15,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:15,962 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 696 transitions. [2022-11-23 14:27:15,962 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) [2022-11-23 14:27:15,962 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 696 transitions. [2022-11-23 14:27:15,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-23 14:27:15,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:15,965 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] [2022-11-23 14:27:15,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:16,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-23 14:27:16,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:16,379 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1130175954, now seen corresponding path program 1 times [2022-11-23 14:27:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:16,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714860126] [2022-11-23 14:27:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:16,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:16,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:16,381 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:16,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-23 14:27:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:18,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:27:18,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:18,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:27:18,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:27:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:27:18,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:18,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714860126] [2022-11-23 14:27:18,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714860126] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:27:18,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [331608543] [2022-11-23 14:27:18,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:18,604 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:27:18,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:27:18,605 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:27:18,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-23 14:27:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:21,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:27:21,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:27:22,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:22,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [331608543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:22,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:27:22,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-11-23 14:27:22,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522656819] [2022-11-23 14:27:22,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:22,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:27:22,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:22,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:27:22,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:27:22,235 INFO L87 Difference]: Start difference. First operand 550 states and 696 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) [2022-11-23 14:27:22,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:22,765 INFO L93 Difference]: Finished difference Result 953 states and 1209 transitions. [2022-11-23 14:27:22,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:27:22,773 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 [2022-11-23 14:27:22,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:22,776 INFO L225 Difference]: With dead ends: 953 [2022-11-23 14:27:22,776 INFO L226 Difference]: Without dead ends: 688 [2022-11-23 14:27:22,777 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 [2022-11-23 14:27:22,778 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 90 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:22,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 673 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:27:22,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-23 14:27:22,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 686. [2022-11-23 14:27:22,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 658 states have (on average 1.2446808510638299) internal successors, (819), 670 states have internal predecessors, (819), 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) [2022-11-23 14:27:22,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 870 transitions. [2022-11-23 14:27:22,812 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 870 transitions. Word has length 164 [2022-11-23 14:27:22,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:22,813 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 870 transitions. [2022-11-23 14:27:22,813 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) [2022-11-23 14:27:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 870 transitions. [2022-11-23 14:27:22,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-23 14:27:22,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:22,816 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] [2022-11-23 14:27:22,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:23,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:23,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:27:23,231 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:23,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:23,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1194831576, now seen corresponding path program 1 times [2022-11-23 14:27:23,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:23,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820623775] [2022-11-23 14:27:23,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:23,233 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:23,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:23,234 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:23,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-23 14:27:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:25,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:27:25,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 14:27:25,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:27:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:27:25,223 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:25,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820623775] [2022-11-23 14:27:25,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820623775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:27:25,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1838712882] [2022-11-23 14:27:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:25,224 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:27:25,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:27:25,225 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:27:25,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-23 14:27:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:27,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:27:27,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-23 14:27:27,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:27,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1838712882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:27,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:27:27,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-23 14:27:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619595930] [2022-11-23 14:27:27,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:27,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:27:27,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:27:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:27:27,819 INFO L87 Difference]: Start difference. First operand 686 states and 870 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) [2022-11-23 14:27:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:28,000 INFO L93 Difference]: Finished difference Result 883 states and 1148 transitions. [2022-11-23 14:27:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:27:28,001 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 [2022-11-23 14:27:28,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:28,004 INFO L225 Difference]: With dead ends: 883 [2022-11-23 14:27:28,004 INFO L226 Difference]: Without dead ends: 720 [2022-11-23 14:27:28,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 511 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:27:28,006 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 77 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:28,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 805 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:27:28,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 720 states. [2022-11-23 14:27:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 720 to 713. [2022-11-23 14:27:28,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 685 states have (on average 1.2131386861313869) internal successors, (831), 697 states have internal predecessors, (831), 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) [2022-11-23 14:27:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 882 transitions. [2022-11-23 14:27:28,041 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 882 transitions. Word has length 174 [2022-11-23 14:27:28,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:28,041 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 882 transitions. [2022-11-23 14:27:28,042 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) [2022-11-23 14:27:28,042 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 882 transitions. [2022-11-23 14:27:28,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-23 14:27:28,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:28,045 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] [2022-11-23 14:27:28,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:28,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:28,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:27:28,471 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:28,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1105991014, now seen corresponding path program 1 times [2022-11-23 14:27:28,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:28,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550086066] [2022-11-23 14:27:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:28,473 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:28,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:28,474 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:28,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-23 14:27:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:30,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:27:30,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:30,391 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 14:27:30,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:27:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:27:30,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:30,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550086066] [2022-11-23 14:27:30,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550086066] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:27:30,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [722067605] [2022-11-23 14:27:30,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:30,532 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:27:30,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:27:30,535 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:27:30,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-23 14:27:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:33,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:27:33,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:33,339 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 14:27:33,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:33,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [722067605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:33,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:27:33,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-23 14:27:33,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038743063] [2022-11-23 14:27:33,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:33,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:27:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:33,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:27:33,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:27:33,343 INFO L87 Difference]: Start difference. First operand 713 states and 882 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 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) [2022-11-23 14:27:33,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:33,508 INFO L93 Difference]: Finished difference Result 1288 states and 1608 transitions. [2022-11-23 14:27:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:27:33,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 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 [2022-11-23 14:27:33,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:33,515 INFO L225 Difference]: With dead ends: 1288 [2022-11-23 14:27:33,515 INFO L226 Difference]: Without dead ends: 665 [2022-11-23 14:27:33,516 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 [2022-11-23 14:27:33,517 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 276 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:33,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 869 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:27:33,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-11-23 14:27:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 662. [2022-11-23 14:27:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 634 states have (on average 1.1782334384858044) internal successors, (747), 646 states have internal predecessors, (747), 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) [2022-11-23 14:27:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 798 transitions. [2022-11-23 14:27:33,557 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 798 transitions. Word has length 174 [2022-11-23 14:27:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:33,557 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 798 transitions. [2022-11-23 14:27:33,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 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) [2022-11-23 14:27:33,558 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 798 transitions. [2022-11-23 14:27:33,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-23 14:27:33,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:33,561 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] [2022-11-23 14:27:33,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:33,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:33,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:33,987 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:33,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1358232908, now seen corresponding path program 1 times [2022-11-23 14:27:33,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:33,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795358373] [2022-11-23 14:27:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:33,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:33,991 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:34,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-23 14:27:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:35,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:27:35,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 14:27:35,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:27:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:27:36,113 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:27:36,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795358373] [2022-11-23 14:27:36,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795358373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:27:36,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1156912755] [2022-11-23 14:27:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:36,114 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:27:36,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:27:36,115 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:27:36,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-23 14:27:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:39,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 1446 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:27:39,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:27:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 14:27:39,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:27:39,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1156912755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:39,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:27:39,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-23 14:27:39,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033504291] [2022-11-23 14:27:39,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:39,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:27:39,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:27:39,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:27:39,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:27:39,435 INFO L87 Difference]: Start difference. First operand 662 states and 798 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) [2022-11-23 14:27:42,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:43,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:44,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:47,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:49,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:52,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:53,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:55,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:56,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:58,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:27:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:58,718 INFO L93 Difference]: Finished difference Result 1448 states and 1752 transitions. [2022-11-23 14:27:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:27:58,722 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 [2022-11-23 14:27:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:58,726 INFO L225 Difference]: With dead ends: 1448 [2022-11-23 14:27:58,727 INFO L226 Difference]: Without dead ends: 912 [2022-11-23 14:27:58,728 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 [2022-11-23 14:27:58,729 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 512 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:58,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 609 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 144 Invalid, 2 Unknown, 0 Unchecked, 19.2s Time] [2022-11-23 14:27:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-11-23 14:27:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 551. [2022-11-23 14:27:58,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 528 states have (on average 1.1742424242424243) internal successors, (620), 535 states have internal predecessors, (620), 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) [2022-11-23 14:27:58,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 661 transitions. [2022-11-23 14:27:58,777 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 661 transitions. Word has length 174 [2022-11-23 14:27:58,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:58,777 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 661 transitions. [2022-11-23 14:27:58,778 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) [2022-11-23 14:27:58,778 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 661 transitions. [2022-11-23 14:27:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-23 14:27:58,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:58,781 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] [2022-11-23 14:27:58,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:59,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-23 14:27:59,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:59,203 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:27:59,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:59,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1943774894, now seen corresponding path program 1 times [2022-11-23 14:27:59,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:27:59,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862731937] [2022-11-23 14:27:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:59,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:27:59,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:27:59,206 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:27:59,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-23 14:28:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:01,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:28:01,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:01,377 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 14:28:01,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:28:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:28:01,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:28:01,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862731937] [2022-11-23 14:28:01,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862731937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:28:01,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [715904903] [2022-11-23 14:28:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:01,506 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:28:01,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:28:01,507 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:28:01,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-23 14:28:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:04,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:28:04,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-23 14:28:04,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:28:04,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [715904903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:04,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 14:28:04,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-11-23 14:28:04,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206732542] [2022-11-23 14:28:04,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:04,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:28:04,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:28:04,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:28:04,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:28:04,711 INFO L87 Difference]: Start difference. First operand 551 states and 661 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) [2022-11-23 14:28:04,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:04,861 INFO L93 Difference]: Finished difference Result 629 states and 761 transitions. [2022-11-23 14:28:04,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:28:04,862 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 [2022-11-23 14:28:04,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:04,865 INFO L225 Difference]: With dead ends: 629 [2022-11-23 14:28:04,865 INFO L226 Difference]: Without dead ends: 543 [2022-11-23 14:28:04,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:28:04,866 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 79 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:04,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 766 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:28:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2022-11-23 14:28:04,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 539. [2022-11-23 14:28:04,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 516 states have (on average 1.1647286821705427) internal successors, (601), 523 states have internal predecessors, (601), 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) [2022-11-23 14:28:04,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 642 transitions. [2022-11-23 14:28:04,900 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 642 transitions. Word has length 181 [2022-11-23 14:28:04,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:04,901 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 642 transitions. [2022-11-23 14:28:04,901 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) [2022-11-23 14:28:04,901 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 642 transitions. [2022-11-23 14:28:04,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-11-23 14:28:04,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:04,904 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] [2022-11-23 14:28:04,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-23 14:28:05,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-23 14:28:05,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:28:05,332 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:28:05,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:05,333 INFO L85 PathProgramCache]: Analyzing trace with hash -34971296, now seen corresponding path program 1 times [2022-11-23 14:28:05,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:28:05,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696652830] [2022-11-23 14:28:05,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:05,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:28:05,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:28:05,335 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:28:05,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-23 14:28:07,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:07,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:28:07,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 14:28:07,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:28:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:28:07,708 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:28:07,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696652830] [2022-11-23 14:28:07,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696652830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:28:07,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1075575664] [2022-11-23 14:28:07,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:07,709 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:28:07,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:28:07,710 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:28:07,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-23 14:28:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:11,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 14:28:11,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 14:28:11,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:28:11,836 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-23 14:28:11,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1075575664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:28:11,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113887422] [2022-11-23 14:28:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:11,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:28:11,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:28:11,842 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:28:11,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-23 14:28:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:14,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:28:14,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:14,611 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 14:28:14,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:28:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-23 14:28:15,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113887422] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:28:15,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:28:15,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 12 [2022-11-23 14:28:15,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706801020] [2022-11-23 14:28:15,128 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:28:15,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:28:15,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:28:15,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:28:15,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:28:15,130 INFO L87 Difference]: Start difference. First operand 539 states and 642 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) [2022-11-23 14:28:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:17,075 INFO L93 Difference]: Finished difference Result 1835 states and 2262 transitions. [2022-11-23 14:28:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:28:17,077 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 [2022-11-23 14:28:17,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:17,085 INFO L225 Difference]: With dead ends: 1835 [2022-11-23 14:28:17,086 INFO L226 Difference]: Without dead ends: 1343 [2022-11-23 14:28:17,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1071 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:28:17,091 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1432 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:17,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 2274 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 14:28:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2022-11-23 14:28:17,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1205. [2022-11-23 14:28:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1160 states have (on average 1.1741379310344828) internal successors, (1362), 1167 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) [2022-11-23 14:28:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1454 transitions. [2022-11-23 14:28:17,193 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1454 transitions. Word has length 181 [2022-11-23 14:28:17,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:17,195 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1454 transitions. [2022-11-23 14:28:17,195 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) [2022-11-23 14:28:17,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1454 transitions. [2022-11-23 14:28:17,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2022-11-23 14:28:17,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:17,208 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] [2022-11-23 14:28:17,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-23 14:28:17,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-23 14:28:17,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-23 14:28:17,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:28:17,827 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:28:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash -708936254, now seen corresponding path program 1 times [2022-11-23 14:28:17,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:28:17,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052813141] [2022-11-23 14:28:17,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:17,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:28:17,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:28:17,831 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:28:17,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-23 14:28:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:28,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:28:28,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-23 14:28:28,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:28:29,202 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-11-23 14:28:29,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:28:29,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052813141] [2022-11-23 14:28:29,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052813141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:28:29,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [373278927] [2022-11-23 14:28:29,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:29,203 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:28:29,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:28:29,205 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:28:29,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-23 14:28:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:42,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-23 14:28:42,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 173 proven. 10 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2022-11-23 14:28:42,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:28:42,368 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 109 proven. 71 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2022-11-23 14:28:42,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [373278927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:28:42,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056267773] [2022-11-23 14:28:42,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:42,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:28:42,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:28:42,372 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:28:42,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-23 14:28:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:53,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 7515 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:28:53,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:28:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 202 proven. 3 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2022-11-23 14:28:53,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:28:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2022-11-23 14:28:53,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056267773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:28:53,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:28:53,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 6, 6] total 20 [2022-11-23 14:28:53,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157259774] [2022-11-23 14:28:53,993 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:28:53,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:28:53,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:28:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:28:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:28:53,996 INFO L87 Difference]: Start difference. First operand 1205 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) [2022-11-23 14:28:56,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:56,164 INFO L93 Difference]: Finished difference Result 2389 states and 3017 transitions. [2022-11-23 14:28:56,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 14:28:56,166 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 [2022-11-23 14:28:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:56,172 INFO L225 Difference]: With dead ends: 2389 [2022-11-23 14:28:56,172 INFO L226 Difference]: Without dead ends: 1225 [2022-11-23 14:28:56,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2917 GetRequests, 2874 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=554, Invalid=1426, Unknown=0, NotChecked=0, Total=1980 [2022-11-23 14:28:56,176 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 187 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 2548 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:56,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 2548 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:28:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2022-11-23 14:28:56,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1217. [2022-11-23 14:28:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 1172 states have (on average 1.1757679180887373) internal successors, (1378), 1179 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) [2022-11-23 14:28:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1470 transitions. [2022-11-23 14:28:56,276 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1470 transitions. Word has length 483 [2022-11-23 14:28:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:56,277 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1470 transitions. [2022-11-23 14:28:56,277 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) [2022-11-23 14:28:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1470 transitions. [2022-11-23 14:28:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2022-11-23 14:28:56,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:56,283 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] [2022-11-23 14:28:56,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-23 14:28:56,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2022-11-23 14:28:56,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-23 14:28:56,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:28:56,907 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:28:56,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:56,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1754575422, now seen corresponding path program 2 times [2022-11-23 14:28:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:28:56,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58203789] [2022-11-23 14:28:56,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:28:56,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:28:56,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:28:56,912 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:28:56,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-23 14:29:09,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:29:09,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:29:09,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 14:29:09,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-23 14:29:09,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:29:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-11-23 14:29:11,011 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:29:11,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58203789] [2022-11-23 14:29:11,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58203789] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:29:11,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1021607387] [2022-11-23 14:29:11,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:29:11,012 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-23 14:29:11,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 [2022-11-23 14:29:11,019 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-23 14:29:11,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-23 14:29:26,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:29:26,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:29:26,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 14:29:26,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 437 proven. 55 refuted. 0 times theorem prover too weak. 886 trivial. 0 not checked. [2022-11-23 14:29:26,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:29:26,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 109 proven. 380 refuted. 0 times theorem prover too weak. 889 trivial. 0 not checked. [2022-11-23 14:29:26,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1021607387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:29:26,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274291401] [2022-11-23 14:29:26,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 14:29:26,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:29:26,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:29:26,853 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:29:26,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-23 14:29:39,165 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 14:29:39,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:29:39,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 7779 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 14:29:39,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:29:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-11-23 14:29:41,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:29:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 580 refuted. 0 times theorem prover too weak. 798 trivial. 0 not checked. [2022-11-23 14:29:43,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274291401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:29:43,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-23 14:29:43,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 7, 7] total 36 [2022-11-23 14:29:43,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595837924] [2022-11-23 14:29:43,330 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-23 14:29:43,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-23 14:29:43,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:29:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-23 14:29:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 14:29:43,336 INFO L87 Difference]: Start difference. First operand 1217 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) [2022-11-23 14:30:08,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:30:08,231 INFO L93 Difference]: Finished difference Result 4750 states and 6231 transitions. [2022-11-23 14:30:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-23 14:30:08,233 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 [2022-11-23 14:30:08,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:30:08,249 INFO L225 Difference]: With dead ends: 4750 [2022-11-23 14:30:08,250 INFO L226 Difference]: Without dead ends: 3576 [2022-11-23 14:30:08,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3075 GetRequests, 3006 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1091, Invalid=3879, Unknown=0, NotChecked=0, Total=4970 [2022-11-23 14:30:08,256 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 5030 mSDsluCounter, 20591 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 1547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5202 SdHoareTripleChecker+Valid, 21822 SdHoareTripleChecker+Invalid, 6670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1547 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:30:08,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5202 Valid, 21822 Invalid, 6670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1547 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 20.6s Time] [2022-11-23 14:30:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2022-11-23 14:30:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3218. [2022-11-23 14:30:08,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3113 states have (on average 1.1692900738837135) internal successors, (3640), 3120 states have internal predecessors, (3640), 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) [2022-11-23 14:30:08,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 3876 transitions. [2022-11-23 14:30:08,502 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 3876 transitions. Word has length 507 [2022-11-23 14:30:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:30:08,502 INFO L495 AbstractCegarLoop]: Abstraction has 3218 states and 3876 transitions. [2022-11-23 14:30:08,503 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) [2022-11-23 14:30:08,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 3876 transitions. [2022-11-23 14:30:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2022-11-23 14:30:08,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:30:08,522 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] [2022-11-23 14:30:08,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-23 14:30:08,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-23 14:30:09,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-23 14:30:09,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/cvc4 --incremental --print-success --lang smt [2022-11-23 14:30:09,140 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:30:09,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:30:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1181150768, now seen corresponding path program 3 times [2022-11-23 14:30:09,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:30:09,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866736505] [2022-11-23 14:30:09,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:30:09,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:30:09,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:30:09,149 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:30:09,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_330158d1-e101-4cbd-973e-7faf3f94539a/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process