./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba --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 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 --- 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-b5237d8 [2022-11-22 01:10:18,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:10:18,457 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:10:18,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:10:18,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:10:18,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:10:18,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:10:18,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:10:18,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:10:18,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:10:18,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:10:18,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:10:18,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:10:18,518 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:10:18,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:10:18,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:10:18,521 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:10:18,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:10:18,523 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:10:18,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:10:18,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:10:18,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:10:18,539 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:10:18,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:10:18,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:10:18,555 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:10:18,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:10:18,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:10:18,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:10:18,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:10:18,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:10:18,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:10:18,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:10:18,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:10:18,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:10:18,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:10:18,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:10:18,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:10:18,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:10:18,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:10:18,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:10:18,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:10:18,590 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:10:18,590 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:10:18,591 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:10:18,591 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:10:18,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:10:18,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:10:18,592 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:10:18,592 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:10:18,592 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:10:18,593 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:10:18,593 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:10:18,593 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:10:18,593 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:10:18,593 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:10:18,594 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:10:18,594 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:10:18,594 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:10:18,594 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:10:18,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:10:18,595 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:10:18,595 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:10:18,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:10:18,596 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:10:18,596 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:10:18,596 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:10:18,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:10:18,597 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:10:18,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:10:18,597 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:10:18,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:10:18,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:10:18,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:10:18,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:10:18,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:10:18,598 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:10:18,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:10:18,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:10:18,599 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:10:18,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:10:18,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:10:18,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:10:18,600 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_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2022-11-22 01:10:18,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:10:18,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:10:18,909 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:10:18,910 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:10:18,911 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:10:18,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2022-11-22 01:10:21,951 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:10:22,204 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:10:22,204 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2022-11-22 01:10:22,210 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/data/a3e63fb6b/e8b2e290076141c6999ea028726c4909/FLAGe6ce967e9 [2022-11-22 01:10:22,225 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/data/a3e63fb6b/e8b2e290076141c6999ea028726c4909 [2022-11-22 01:10:22,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:10:22,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:10:22,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:10:22,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:10:22,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:10:22,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388557a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22, skipping insertion in model container [2022-11-22 01:10:22,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:10:22,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:10:22,430 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_6b25bead-86d1-46f4-bd37-a7146cf32065/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2022-11-22 01:10:22,435 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_6b25bead-86d1-46f4-bd37-a7146cf32065/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2022-11-22 01:10:22,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:10:22,446 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:10:22,470 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_6b25bead-86d1-46f4-bd37-a7146cf32065/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2022-11-22 01:10:22,471 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_6b25bead-86d1-46f4-bd37-a7146cf32065/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2022-11-22 01:10:22,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:10:22,484 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:10:22,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22 WrapperNode [2022-11-22 01:10:22,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:10:22,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:10:22,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:10:22,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:10:22,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,522 INFO L138 Inliner]: procedures = 19, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2022-11-22 01:10:22,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:10:22,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:10:22,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:10:22,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:10:22,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,534 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,547 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:10:22,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:10:22,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:10:22,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:10:22,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (1/1) ... [2022-11-22 01:10:22,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:10:22,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:10:22,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:10:22,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:10:22,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:10:22,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:10:22,648 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:10:22,649 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-22 01:10:22,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-22 01:10:22,649 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-11-22 01:10:22,650 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-11-22 01:10:22,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-22 01:10:22,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:10:22,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:10:22,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:10:22,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:10:22,768 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:10:22,770 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:10:22,991 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:10:23,178 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:10:23,178 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 01:10:23,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:10:23 BoogieIcfgContainer [2022-11-22 01:10:23,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:10:23,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:10:23,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:10:23,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:10:23,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:10:22" (1/3) ... [2022-11-22 01:10:23,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6268a3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:10:23, skipping insertion in model container [2022-11-22 01:10:23,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:22" (2/3) ... [2022-11-22 01:10:23,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6268a3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:10:23, skipping insertion in model container [2022-11-22 01:10:23,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:10:23" (3/3) ... [2022-11-22 01:10:23,204 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2022-11-22 01:10:23,233 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:10:23,233 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 01:10:23,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:10:23,313 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;@1fa34bd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:10:23,313 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 01:10:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 32 states have (on average 1.40625) internal successors, (45), 34 states have internal predecessors, (45), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:10:23,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 01:10:23,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:23,327 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:10:23,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:23,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash 92772046, now seen corresponding path program 1 times [2022-11-22 01:10:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:10:23,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047625605] [2022-11-22 01:10:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:23,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:10:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:10:23,681 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:10:23,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047625605] [2022-11-22 01:10:23,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047625605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:23,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:23,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:10:23,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356814511] [2022-11-22 01:10:23,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:23,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:10:23,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:10:23,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:10:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:23,727 INFO L87 Difference]: Start difference. First operand has 47 states, 32 states have (on average 1.40625) internal successors, (45), 34 states have internal predecessors, (45), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 01:10:23,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:23,898 INFO L93 Difference]: Finished difference Result 89 states and 125 transitions. [2022-11-22 01:10:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:10:23,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-22 01:10:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:23,909 INFO L225 Difference]: With dead ends: 89 [2022-11-22 01:10:23,910 INFO L226 Difference]: Without dead ends: 53 [2022-11-22 01:10:23,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:10:23,919 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:23,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:10:23,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-22 01:10:23,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-11-22 01:10:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:10:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2022-11-22 01:10:23,967 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 24 [2022-11-22 01:10:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:23,967 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2022-11-22 01:10:23,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 01:10:23,968 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2022-11-22 01:10:23,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 01:10:23,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:23,970 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:10:23,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:10:23,971 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash 291622722, now seen corresponding path program 1 times [2022-11-22 01:10:23,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:10:23,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636174140] [2022-11-22 01:10:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:23,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:10:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:10:24,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:10:24,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636174140] [2022-11-22 01:10:24,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636174140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:24,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:24,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:10:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392175865] [2022-11-22 01:10:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:24,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:10:24,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:10:24,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:10:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:10:24,053 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-11-22 01:10:24,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:24,076 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2022-11-22 01:10:24,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:10:24,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 29 [2022-11-22 01:10:24,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:24,078 INFO L225 Difference]: With dead ends: 49 [2022-11-22 01:10:24,078 INFO L226 Difference]: Without dead ends: 47 [2022-11-22 01:10:24,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:10:24,080 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:24,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:10:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-22 01:10:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-22 01:10:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:10:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2022-11-22 01:10:24,089 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 29 [2022-11-22 01:10:24,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:24,090 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2022-11-22 01:10:24,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2022-11-22 01:10:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2022-11-22 01:10:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-22 01:10:24,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:24,092 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:10:24,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:10:24,092 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:24,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:24,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1894378411, now seen corresponding path program 1 times [2022-11-22 01:10:24,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:10:24,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389244284] [2022-11-22 01:10:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:24,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:10:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:10:24,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:10:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:10:24,275 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:10:24,276 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:10:24,277 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-22 01:10:24,279 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-22 01:10:24,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:10:24,283 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-22 01:10:24,286 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:10:24,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:10:24 BoogieIcfgContainer [2022-11-22 01:10:24,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:10:24,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:10:24,316 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:10:24,316 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:10:24,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:10:23" (3/4) ... [2022-11-22 01:10:24,320 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 01:10:24,320 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:10:24,321 INFO L158 Benchmark]: Toolchain (without parser) took 2091.79ms. Allocated memory is still 192.9MB. Free memory was 161.9MB in the beginning and 137.3MB in the end (delta: 24.6MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2022-11-22 01:10:24,322 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:10:24,322 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.64ms. Allocated memory is still 192.9MB. Free memory was 161.4MB in the beginning and 150.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 01:10:24,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.22ms. Allocated memory is still 192.9MB. Free memory was 150.4MB in the beginning and 148.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:10:24,323 INFO L158 Benchmark]: Boogie Preprocessor took 27.19ms. Allocated memory is still 192.9MB. Free memory was 148.8MB in the beginning and 147.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:10:24,324 INFO L158 Benchmark]: RCFGBuilder took 642.89ms. Allocated memory is still 192.9MB. Free memory was 147.3MB in the beginning and 127.4MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-22 01:10:24,324 INFO L158 Benchmark]: TraceAbstraction took 1118.81ms. Allocated memory is still 192.9MB. Free memory was 126.9MB in the beginning and 137.6MB in the end (delta: -10.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:10:24,325 INFO L158 Benchmark]: Witness Printer took 4.38ms. Allocated memory is still 192.9MB. Free memory was 137.6MB in the beginning and 137.3MB in the end (delta: 333.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:10:24,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 87.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.64ms. Allocated memory is still 192.9MB. Free memory was 161.4MB in the beginning and 150.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.22ms. Allocated memory is still 192.9MB. Free memory was 150.4MB in the beginning and 148.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.19ms. Allocated memory is still 192.9MB. Free memory was 148.8MB in the beginning and 147.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 642.89ms. Allocated memory is still 192.9MB. Free memory was 147.3MB in the beginning and 127.4MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1118.81ms. Allocated memory is still 192.9MB. Free memory was 126.9MB in the beginning and 137.6MB in the end (delta: -10.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.38ms. Allocated memory is still 192.9MB. Free memory was 137.6MB in the beginning and 137.3MB in the end (delta: 333.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 77]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L70] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578696] [L59] return x != x; [L70] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, x=4286578696] [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, x=4286578696] [L70] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578697] [L59] return x != x; [L70] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L73] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696] [L15] __uint32_t w; VAL [\old(x)=4286578696, x=4286578696] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696, \old(y)=4286578697, __fpclassify_float(x)=0, x=4286578696, y=4286578697] [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\old(x)=4286578696, \old(y)=4286578697, \result=4286578697, x=4286578696, y=4286578697] [L73] RET, EXPR fmin_float(x, y) [L73] float res = fmin_float(x, y); [L76] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578696] [L59] return x != x; [L76] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, res=4286578697, x=4286578696, y=4286578697] [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, res=4286578697, x=4286578696, y=4286578697] [L76] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578697] [L59] return x != x; [L76] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578697, x=4286578696, y=4286578697] [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578697, x=4286578696, y=4286578697] [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() VAL [res=4286578697, x=4286578696, y=4286578697] - UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 250 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 110 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-22 01:10:24,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba --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 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 --- 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-b5237d8 [2022-11-22 01:10:26,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:10:26,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:10:26,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:10:26,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:10:26,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:10:26,973 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:10:26,976 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:10:26,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:10:26,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:10:26,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:10:26,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:10:26,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:10:26,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:10:26,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:10:27,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:10:27,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:10:27,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:10:27,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:10:27,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:10:27,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:10:27,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:10:27,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:10:27,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:10:27,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:10:27,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:10:27,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:10:27,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:10:27,030 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:10:27,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:10:27,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:10:27,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:10:27,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:10:27,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:10:27,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:10:27,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:10:27,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:10:27,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:10:27,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:10:27,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:10:27,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:10:27,054 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-22 01:10:27,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:10:27,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:10:27,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:10:27,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:10:27,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:10:27,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:10:27,091 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:10:27,091 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:10:27,092 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:10:27,092 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:10:27,093 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:10:27,093 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:10:27,094 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:10:27,094 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:10:27,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:10:27,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:10:27,095 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:10:27,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:10:27,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:10:27,096 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 01:10:27,096 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 01:10:27,096 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 01:10:27,097 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:10:27,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:10:27,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:10:27,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:10:27,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:10:27,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 01:10:27,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:10:27,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:10:27,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:10:27,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:10:27,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:10:27,100 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 01:10:27,100 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 01:10:27,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:10:27,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:10:27,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 01:10:27,101 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_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2022-11-22 01:10:27,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:10:27,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:10:27,547 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:10:27,548 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:10:27,549 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:10:27,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2022-11-22 01:10:30,799 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:10:31,050 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:10:31,050 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2022-11-22 01:10:31,061 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/data/44f0404f5/ab73603bb29b4f59b4b753caef8a0d22/FLAG2f8ce1365 [2022-11-22 01:10:31,094 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/data/44f0404f5/ab73603bb29b4f59b4b753caef8a0d22 [2022-11-22 01:10:31,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:10:31,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:10:31,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:10:31,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:10:31,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:10:31,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cafbee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31, skipping insertion in model container [2022-11-22 01:10:31,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:10:31,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:10:31,392 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_6b25bead-86d1-46f4-bd37-a7146cf32065/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2022-11-22 01:10:31,396 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_6b25bead-86d1-46f4-bd37-a7146cf32065/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2022-11-22 01:10:31,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:10:31,418 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:10:31,463 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_6b25bead-86d1-46f4-bd37-a7146cf32065/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2022-11-22 01:10:31,464 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_6b25bead-86d1-46f4-bd37-a7146cf32065/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2022-11-22 01:10:31,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:10:31,486 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:10:31,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31 WrapperNode [2022-11-22 01:10:31,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:10:31,488 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:10:31,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:10:31,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:10:31,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,552 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2022-11-22 01:10:31,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:10:31,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:10:31,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:10:31,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:10:31,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,609 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:10:31,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:10:31,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:10:31,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:10:31,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (1/1) ... [2022-11-22 01:10:31,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:10:31,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:10:31,667 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:10:31,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:10:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:10:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-22 01:10:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:10:31,714 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-22 01:10:31,714 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-22 01:10:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-11-22 01:10:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-11-22 01:10:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-22 01:10:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:10:31,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:10:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-22 01:10:31,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:10:31,799 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:10:31,801 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:10:32,129 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:10:32,134 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:10:32,135 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 01:10:32,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:10:32 BoogieIcfgContainer [2022-11-22 01:10:32,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:10:32,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:10:32,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:10:32,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:10:32,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:10:31" (1/3) ... [2022-11-22 01:10:32,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b113c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:10:32, skipping insertion in model container [2022-11-22 01:10:32,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:10:31" (2/3) ... [2022-11-22 01:10:32,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b113c51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:10:32, skipping insertion in model container [2022-11-22 01:10:32,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:10:32" (3/3) ... [2022-11-22 01:10:32,145 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2022-11-22 01:10:32,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:10:32,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 01:10:32,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:10:32,296 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;@73b4e785, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:10:32,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 01:10:32,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:10:32,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-22 01:10:32,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:32,311 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] [2022-11-22 01:10:32,312 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:32,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:32,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1842866032, now seen corresponding path program 1 times [2022-11-22 01:10:32,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:32,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127409556] [2022-11-22 01:10:32,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:32,335 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 [2022-11-22 01:10:32,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:32,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:32,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:32,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-22 01:10:32,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:10:32,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:10:32,553 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:32,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127409556] [2022-11-22 01:10:32,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127409556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:32,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:32,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:10:32,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435008172] [2022-11-22 01:10:32,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:32,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:10:32,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:32,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:10:32,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:10:32,605 INFO L87 Difference]: Start difference. First operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 01:10:32,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:32,643 INFO L93 Difference]: Finished difference Result 89 states and 128 transitions. [2022-11-22 01:10:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:10:32,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-11-22 01:10:32,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:32,653 INFO L225 Difference]: With dead ends: 89 [2022-11-22 01:10:32,654 INFO L226 Difference]: Without dead ends: 49 [2022-11-22 01:10:32,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:10:32,661 INFO L413 NwaCegarLoop]: 72 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, 72 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 [2022-11-22 01:10:32,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:10:32,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-22 01:10:32,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-22 01:10:32,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:10:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2022-11-22 01:10:32,769 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 27 [2022-11-22 01:10:32,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:32,770 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2022-11-22 01:10:32,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 01:10:32,770 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2022-11-22 01:10:32,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-22 01:10:32,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:32,772 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] [2022-11-22 01:10:32,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:32,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:32,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:32,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash -207460078, now seen corresponding path program 1 times [2022-11-22 01:10:32,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:32,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51010000] [2022-11-22 01:10:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:32,988 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 [2022-11-22 01:10:32,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:32,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:33,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:33,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:10:33,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:10:33,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:10:33,148 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:33,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51010000] [2022-11-22 01:10:33,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51010000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:33,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:33,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:10:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283406277] [2022-11-22 01:10:33,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:33,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:10:33,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:33,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:10:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:33,152 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 01:10:33,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:33,201 INFO L93 Difference]: Finished difference Result 92 states and 125 transitions. [2022-11-22 01:10:33,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:10:33,202 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-11-22 01:10:33,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:33,203 INFO L225 Difference]: With dead ends: 92 [2022-11-22 01:10:33,204 INFO L226 Difference]: Without dead ends: 58 [2022-11-22 01:10:33,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:10:33,205 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 16 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:33,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 182 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:10:33,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-22 01:10:33,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2022-11-22 01:10:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:10:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2022-11-22 01:10:33,215 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 28 [2022-11-22 01:10:33,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:33,216 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2022-11-22 01:10:33,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 01:10:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2022-11-22 01:10:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-22 01:10:33,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:33,218 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:10:33,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:33,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:33,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:33,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:33,431 INFO L85 PathProgramCache]: Analyzing trace with hash 318152461, now seen corresponding path program 1 times [2022-11-22 01:10:33,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:33,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2123019454] [2022-11-22 01:10:33,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:33,432 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 [2022-11-22 01:10:33,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:33,437 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:33,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:33,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:10:33,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:33,611 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:10:33,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:10:33,611 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:33,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2123019454] [2022-11-22 01:10:33,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2123019454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:33,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:33,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:10:33,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61545721] [2022-11-22 01:10:33,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:33,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:10:33,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:33,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:10:33,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:33,622 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:10:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:33,688 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2022-11-22 01:10:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:10:33,689 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-11-22 01:10:33,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:33,692 INFO L225 Difference]: With dead ends: 74 [2022-11-22 01:10:33,692 INFO L226 Difference]: Without dead ends: 54 [2022-11-22 01:10:33,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:33,694 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:33,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:10:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-22 01:10:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-22 01:10:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-22 01:10:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-22 01:10:33,705 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 33 [2022-11-22 01:10:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:33,706 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-22 01:10:33,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:10:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-22 01:10:33,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-22 01:10:33,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:33,708 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:10:33,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:33,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:33,922 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 810873816, now seen corresponding path program 1 times [2022-11-22 01:10:33,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:33,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191145496] [2022-11-22 01:10:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:33,924 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 [2022-11-22 01:10:33,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:33,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:33,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:34,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:10:34,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:10:34,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:10:34,061 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:34,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191145496] [2022-11-22 01:10:34,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [191145496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:34,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:34,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:10:34,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097986347] [2022-11-22 01:10:34,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:34,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:10:34,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:10:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:34,067 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:10:34,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:34,134 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-11-22 01:10:34,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:10:34,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-11-22 01:10:34,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:34,137 INFO L225 Difference]: With dead ends: 77 [2022-11-22 01:10:34,138 INFO L226 Difference]: Without dead ends: 57 [2022-11-22 01:10:34,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:34,139 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:34,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:10:34,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-22 01:10:34,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-22 01:10:34,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-22 01:10:34,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-22 01:10:34,157 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 34 [2022-11-22 01:10:34,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:34,157 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-22 01:10:34,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:10:34,158 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-22 01:10:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-22 01:10:34,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:34,159 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:10:34,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:34,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:34,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:34,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:34,361 INFO L85 PathProgramCache]: Analyzing trace with hash 2026721905, now seen corresponding path program 1 times [2022-11-22 01:10:34,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:34,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492297610] [2022-11-22 01:10:34,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:34,362 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 [2022-11-22 01:10:34,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:34,363 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:34,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:34,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:10:34,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:10:34,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:10:34,467 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:34,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492297610] [2022-11-22 01:10:34,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492297610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:34,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:34,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:10:34,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471687110] [2022-11-22 01:10:34,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:34,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:10:34,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:34,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:10:34,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:34,471 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:10:34,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:34,669 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-11-22 01:10:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:10:34,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-11-22 01:10:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:34,671 INFO L225 Difference]: With dead ends: 77 [2022-11-22 01:10:34,671 INFO L226 Difference]: Without dead ends: 57 [2022-11-22 01:10:34,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:34,672 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:34,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:10:34,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-22 01:10:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-22 01:10:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-22 01:10:34,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-22 01:10:34,697 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 35 [2022-11-22 01:10:34,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:34,697 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-22 01:10:34,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:10:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-22 01:10:34,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-22 01:10:34,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:34,700 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:10:34,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:34,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:34,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:34,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:34,901 INFO L85 PathProgramCache]: Analyzing trace with hash -110305028, now seen corresponding path program 1 times [2022-11-22 01:10:34,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:34,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351009536] [2022-11-22 01:10:34,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:34,902 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 [2022-11-22 01:10:34,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:34,903 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:34,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:35,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:10:35,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:10:35,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:10:35,030 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:35,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351009536] [2022-11-22 01:10:35,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351009536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:35,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:35,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:10:35,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074554385] [2022-11-22 01:10:35,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:35,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:10:35,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:35,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:10:35,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:35,032 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:10:35,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:35,093 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-11-22 01:10:35,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:10:35,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2022-11-22 01:10:35,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:35,098 INFO L225 Difference]: With dead ends: 77 [2022-11-22 01:10:35,099 INFO L226 Difference]: Without dead ends: 57 [2022-11-22 01:10:35,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:35,102 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:35,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:10:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-22 01:10:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-22 01:10:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-22 01:10:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-22 01:10:35,109 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 36 [2022-11-22 01:10:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:35,109 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-22 01:10:35,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 01:10:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-22 01:10:35,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-22 01:10:35,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:35,111 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:10:35,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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)] Ended with exit code 0 [2022-11-22 01:10:35,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:35,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:35,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:35,325 INFO L85 PathProgramCache]: Analyzing trace with hash -403708035, now seen corresponding path program 1 times [2022-11-22 01:10:35,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:35,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002751732] [2022-11-22 01:10:35,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:35,325 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 [2022-11-22 01:10:35,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:35,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:35,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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)] Waiting until timeout for monitored process [2022-11-22 01:10:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:35,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:10:35,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:35,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:10:35,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:36,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:10:36,068 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:36,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002751732] [2022-11-22 01:10:36,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002751732] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:10:36,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [744299258] [2022-11-22 01:10:36,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:36,069 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:10:36,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:10:36,082 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:10:36,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-22 01:10:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:36,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:10:36,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:36,292 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 01:10:36,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:10:36,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [744299258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:36,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:10:36,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 9] total 14 [2022-11-22 01:10:36,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976630907] [2022-11-22 01:10:36,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:36,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:10:36,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:10:36,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:10:36,298 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-11-22 01:10:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:36,320 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2022-11-22 01:10:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:10:36,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 36 [2022-11-22 01:10:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:36,323 INFO L225 Difference]: With dead ends: 57 [2022-11-22 01:10:36,323 INFO L226 Difference]: Without dead ends: 55 [2022-11-22 01:10:36,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:10:36,327 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:36,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:10:36,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-22 01:10:36,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-22 01:10:36,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 40 states have (on average 1.3) internal successors, (52), 41 states have internal predecessors, (52), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-22 01:10:36,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2022-11-22 01:10:36,343 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 36 [2022-11-22 01:10:36,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:36,344 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions. [2022-11-22 01:10:36,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-11-22 01:10:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2022-11-22 01:10:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-22 01:10:36,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:36,347 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:10:36,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:36,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:36,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 01:10:36,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:36,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:36,770 INFO L85 PathProgramCache]: Analyzing trace with hash -987503231, now seen corresponding path program 1 times [2022-11-22 01:10:36,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:36,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094504021] [2022-11-22 01:10:36,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:36,771 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 [2022-11-22 01:10:36,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:36,772 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:36,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (10)] Waiting until timeout for monitored process [2022-11-22 01:10:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:36,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:10:36,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:37,267 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:10:37,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:10:37,666 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:37,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094504021] [2022-11-22 01:10:37,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094504021] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:10:37,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1749676489] [2022-11-22 01:10:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:37,666 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:10:37,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:10:37,668 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:10:37,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-22 01:10:37,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:37,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:10:37,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:10:38,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:10:38,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1749676489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:10:38,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416448754] [2022-11-22 01:10:38,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:38,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:10:38,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:10:38,306 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:10:38,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 01:10:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:38,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-22 01:10:38,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:10:38,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:10:39,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416448754] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 01:10:39,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2022-11-22 01:10:39,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10, 9, 9, 14] total 26 [2022-11-22 01:10:39,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821645570] [2022-11-22 01:10:39,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:39,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:10:39,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:39,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:10:39,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-22 01:10:39,113 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-22 01:10:39,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:39,857 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2022-11-22 01:10:39,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:10:39,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2022-11-22 01:10:39,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:39,859 INFO L225 Difference]: With dead ends: 73 [2022-11-22 01:10:39,859 INFO L226 Difference]: Without dead ends: 71 [2022-11-22 01:10:39,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:10:39,861 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 53 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:39,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 296 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:10:39,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-22 01:10:39,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2022-11-22 01:10:39,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-22 01:10:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2022-11-22 01:10:39,868 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 41 [2022-11-22 01:10:39,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:39,868 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2022-11-22 01:10:39,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-22 01:10:39,869 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2022-11-22 01:10:39,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-22 01:10:39,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:39,870 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 01:10:39,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:40,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (10)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:40,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:40,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:10:40,473 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:40,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1731684142, now seen corresponding path program 1 times [2022-11-22 01:10:40,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:40,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [594988669] [2022-11-22 01:10:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:40,475 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 [2022-11-22 01:10:40,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:40,476 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:40,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:40,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:10:40,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:10:40,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:40,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:10:40,995 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:40,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [594988669] [2022-11-22 01:10:40,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [594988669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:10:40,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [844014755] [2022-11-22 01:10:40,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:40,996 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:10:40,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:10:40,997 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:10:41,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-22 01:10:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:41,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:10:41,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 01:10:41,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:10:41,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [844014755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:41,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:10:41,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 9] total 14 [2022-11-22 01:10:41,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859503763] [2022-11-22 01:10:41,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:41,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:10:41,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:41,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:10:41,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:10:41,215 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:10:41,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:41,228 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2022-11-22 01:10:41,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:10:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2022-11-22 01:10:41,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:41,230 INFO L225 Difference]: With dead ends: 64 [2022-11-22 01:10:41,230 INFO L226 Difference]: Without dead ends: 61 [2022-11-22 01:10:41,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:10:41,231 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:41,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:10:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-22 01:10:41,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-22 01:10:41,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 45 states have internal predecessors, (56), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-22 01:10:41,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 82 transitions. [2022-11-22 01:10:41,238 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 82 transitions. Word has length 43 [2022-11-22 01:10:41,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:41,239 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-22 01:10:41,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-22 01:10:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 82 transitions. [2022-11-22 01:10:41,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-22 01:10:41,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:41,240 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 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] [2022-11-22 01:10:41,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:41,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:41,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:41,643 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:41,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:41,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1178252102, now seen corresponding path program 1 times [2022-11-22 01:10:41,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:41,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021387024] [2022-11-22 01:10:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:41,644 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 [2022-11-22 01:10:41,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:41,645 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:41,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:41,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:10:41,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 01:10:41,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:10:41,748 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:41,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021387024] [2022-11-22 01:10:41,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021387024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:41,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:41,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:10:41,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816677067] [2022-11-22 01:10:41,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:41,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:10:41,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:10:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:41,751 INFO L87 Difference]: Start difference. First operand 61 states and 82 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:10:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:41,797 INFO L93 Difference]: Finished difference Result 85 states and 111 transitions. [2022-11-22 01:10:41,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:10:41,798 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-11-22 01:10:41,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:41,799 INFO L225 Difference]: With dead ends: 85 [2022-11-22 01:10:41,799 INFO L226 Difference]: Without dead ends: 64 [2022-11-22 01:10:41,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:41,800 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:41,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:10:41,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-22 01:10:41,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-22 01:10:41,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 12 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (16), 14 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-22 01:10:41,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2022-11-22 01:10:41,805 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 46 [2022-11-22 01:10:41,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:41,806 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2022-11-22 01:10:41,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:10:41,806 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2022-11-22 01:10:41,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-22 01:10:41,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:41,818 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 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] [2022-11-22 01:10:41,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:42,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:42,030 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:42,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash -101611576, now seen corresponding path program 1 times [2022-11-22 01:10:42,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:42,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041424896] [2022-11-22 01:10:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:42,032 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 [2022-11-22 01:10:42,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:42,033 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:42,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (16)] Waiting until timeout for monitored process [2022-11-22 01:10:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:42,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-22 01:10:42,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:43,598 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 01:10:43,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 01:10:44,905 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:44,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041424896] [2022-11-22 01:10:44,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041424896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:10:44,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1293342873] [2022-11-22 01:10:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:44,905 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:10:44,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:10:44,911 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:10:44,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-22 01:10:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:45,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:10:45,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 01:10:45,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:46,100 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 01:10:46,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1293342873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:10:46,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793077135] [2022-11-22 01:10:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:46,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:10:46,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:10:46,103 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:10:46,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-22 01:10:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:46,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-22 01:10:46,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 01:10:47,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:48,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793077135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:10:48,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-22 01:10:48,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10, 10, 11] total 33 [2022-11-22 01:10:48,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079238924] [2022-11-22 01:10:48,472 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-22 01:10:48,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-22 01:10:48,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:48,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-22 01:10:48,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2022-11-22 01:10:48,475 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-22 01:10:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:52,657 INFO L93 Difference]: Finished difference Result 174 states and 232 transitions. [2022-11-22 01:10:52,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 01:10:52,658 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) Word has length 46 [2022-11-22 01:10:52,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:52,659 INFO L225 Difference]: With dead ends: 174 [2022-11-22 01:10:52,659 INFO L226 Difference]: Without dead ends: 136 [2022-11-22 01:10:52,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=441, Invalid=2639, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 01:10:52,661 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 344 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:52,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 983 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-22 01:10:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-22 01:10:52,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 77. [2022-11-22 01:10:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 54 states have internal predecessors, (70), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (23), 20 states have call predecessors, (23), 16 states have call successors, (23) [2022-11-22 01:10:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2022-11-22 01:10:52,680 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 46 [2022-11-22 01:10:52,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:52,680 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2022-11-22 01:10:52,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-22 01:10:52,681 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2022-11-22 01:10:52,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-22 01:10:52,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:52,684 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 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] [2022-11-22 01:10:52,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (16)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:52,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:53,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:53,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:10:53,298 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:53,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:53,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1695459100, now seen corresponding path program 1 times [2022-11-22 01:10:53,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:53,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197371872] [2022-11-22 01:10:53,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:53,299 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 [2022-11-22 01:10:53,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:53,300 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:53,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:53,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:10:53,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:10:53,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:10:53,410 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:53,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197371872] [2022-11-22 01:10:53,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197371872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:10:53,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:10:53,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:10:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627581582] [2022-11-22 01:10:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:10:53,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:10:53,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:10:53,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:53,415 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:10:53,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:53,459 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2022-11-22 01:10:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:10:53,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2022-11-22 01:10:53,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:53,461 INFO L225 Difference]: With dead ends: 102 [2022-11-22 01:10:53,461 INFO L226 Difference]: Without dead ends: 81 [2022-11-22 01:10:53,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:10:53,462 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:53,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:10:53,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-22 01:10:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-11-22 01:10:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 16 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (27), 20 states have call predecessors, (27), 16 states have call successors, (27) [2022-11-22 01:10:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2022-11-22 01:10:53,473 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 48 [2022-11-22 01:10:53,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:53,473 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2022-11-22 01:10:53,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:10:53,474 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2022-11-22 01:10:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-22 01:10:53,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:53,475 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:10:53,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:53,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:10:53,687 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:10:53,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:10:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash -754173183, now seen corresponding path program 1 times [2022-11-22 01:10:53,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:10:53,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133492609] [2022-11-22 01:10:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:53,688 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 [2022-11-22 01:10:53,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:10:53,689 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:10:53,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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)] Waiting until timeout for monitored process [2022-11-22 01:10:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:53,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:10:53,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:10:53,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:54,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 01:10:54,479 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:10:54,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133492609] [2022-11-22 01:10:54,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133492609] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:10:54,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1436277343] [2022-11-22 01:10:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:54,480 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:10:54,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:10:54,481 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:10:54,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-22 01:10:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:54,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-22 01:10:54,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 01:10:55,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 01:10:55,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1436277343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:10:55,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058333374] [2022-11-22 01:10:55,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:10:55,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:10:55,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:10:55,407 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:10:55,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-22 01:10:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:10:55,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:10:55,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:10:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 01:10:55,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:10:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 01:10:55,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058333374] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:10:55,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:10:55,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9, 10, 8, 9] total 22 [2022-11-22 01:10:55,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459923396] [2022-11-22 01:10:55,829 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:10:55,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-22 01:10:55,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:10:55,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-22 01:10:55,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-11-22 01:10:55,831 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-22 01:10:58,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-22 01:10:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:10:59,520 INFO L93 Difference]: Finished difference Result 146 states and 205 transitions. [2022-11-22 01:10:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 01:10:59,521 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) Word has length 48 [2022-11-22 01:10:59,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:10:59,522 INFO L225 Difference]: With dead ends: 146 [2022-11-22 01:10:59,522 INFO L226 Difference]: Without dead ends: 120 [2022-11-22 01:10:59,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=220, Invalid=1112, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:10:59,524 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 186 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:10:59,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 967 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 01:10:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-22 01:10:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 99. [2022-11-22 01:10:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-22 01:10:59,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2022-11-22 01:10:59,549 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 48 [2022-11-22 01:10:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:10:59,551 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2022-11-22 01:10:59,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-22 01:10:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2022-11-22 01:10:59,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-22 01:10:59,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:10:59,552 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 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] [2022-11-22 01:10:59,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:59,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:10:59,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-22 01:11:00,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:11:00,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:00,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:00,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1891599591, now seen corresponding path program 1 times [2022-11-22 01:11:00,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:00,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837219520] [2022-11-22 01:11:00,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:00,166 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 [2022-11-22 01:11:00,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:00,167 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:00,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (23)] Waiting until timeout for monitored process [2022-11-22 01:11:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:00,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:11:00,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:11:00,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:11:00,406 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:00,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837219520] [2022-11-22 01:11:00,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837219520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:00,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:00,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 01:11:00,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115540464] [2022-11-22 01:11:00,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:00,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:11:00,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:00,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:11:00,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:11:00,408 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 01:11:00,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:00,795 INFO L93 Difference]: Finished difference Result 165 states and 228 transitions. [2022-11-22 01:11:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:11:00,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2022-11-22 01:11:00,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:00,797 INFO L225 Difference]: With dead ends: 165 [2022-11-22 01:11:00,797 INFO L226 Difference]: Without dead ends: 115 [2022-11-22 01:11:00,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-22 01:11:00,798 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 53 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:00,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 397 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:11:00,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-22 01:11:00,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2022-11-22 01:11:00,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-22 01:11:00,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 142 transitions. [2022-11-22 01:11:00,808 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 142 transitions. Word has length 48 [2022-11-22 01:11:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:00,809 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 142 transitions. [2022-11-22 01:11:00,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 01:11:00,809 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2022-11-22 01:11:00,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-22 01:11:00,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:00,810 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 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] [2022-11-22 01:11:00,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (23)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:01,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:01,010 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:01,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:01,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1319000567, now seen corresponding path program 1 times [2022-11-22 01:11:01,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:01,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261910742] [2022-11-22 01:11:01,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:01,012 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 [2022-11-22 01:11:01,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:01,013 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:01,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:01,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:01,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:11:01,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:11:01,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:11:01,107 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:01,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261910742] [2022-11-22 01:11:01,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1261910742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:01,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:01,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:11:01,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001909663] [2022-11-22 01:11:01,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:01,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:11:01,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:01,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:11:01,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:11:01,109 INFO L87 Difference]: Start difference. First operand 99 states and 142 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:11:01,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:01,153 INFO L93 Difference]: Finished difference Result 136 states and 192 transitions. [2022-11-22 01:11:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:11:01,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2022-11-22 01:11:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:01,162 INFO L225 Difference]: With dead ends: 136 [2022-11-22 01:11:01,162 INFO L226 Difference]: Without dead ends: 103 [2022-11-22 01:11:01,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:11:01,167 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:01,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:11:01,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-22 01:11:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2022-11-22 01:11:01,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-22 01:11:01,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 142 transitions. [2022-11-22 01:11:01,181 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 142 transitions. Word has length 49 [2022-11-22 01:11:01,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:01,181 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 142 transitions. [2022-11-22 01:11:01,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:11:01,182 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2022-11-22 01:11:01,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 01:11:01,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:01,185 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 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] [2022-11-22 01:11:01,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:01,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:01,397 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:01,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:01,398 INFO L85 PathProgramCache]: Analyzing trace with hash 584647616, now seen corresponding path program 1 times [2022-11-22 01:11:01,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:01,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834661932] [2022-11-22 01:11:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:01,399 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 [2022-11-22 01:11:01,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:01,400 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:01,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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)] Waiting until timeout for monitored process [2022-11-22 01:11:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:01,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:11:01,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:01,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:11:01,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:11:01,511 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:01,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834661932] [2022-11-22 01:11:01,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834661932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:01,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:01,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:11:01,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688454779] [2022-11-22 01:11:01,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:01,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:11:01,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:01,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:11:01,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:11:01,513 INFO L87 Difference]: Start difference. First operand 99 states and 142 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:11:01,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:01,556 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2022-11-22 01:11:01,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:11:01,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2022-11-22 01:11:01,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:01,558 INFO L225 Difference]: With dead ends: 134 [2022-11-22 01:11:01,558 INFO L226 Difference]: Without dead ends: 101 [2022-11-22 01:11:01,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:11:01,571 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:01,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:11:01,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-22 01:11:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-11-22 01:11:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 68 states have internal predecessors, (83), 22 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (30), 26 states have call predecessors, (30), 22 states have call successors, (30) [2022-11-22 01:11:01,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2022-11-22 01:11:01,583 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 50 [2022-11-22 01:11:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:01,584 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2022-11-22 01:11:01,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-22 01:11:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2022-11-22 01:11:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 01:11:01,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:01,586 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 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] [2022-11-22 01:11:01,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:01,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:01,799 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:01,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:01,799 INFO L85 PathProgramCache]: Analyzing trace with hash -412424737, now seen corresponding path program 1 times [2022-11-22 01:11:01,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:01,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099579714] [2022-11-22 01:11:01,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:01,800 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 [2022-11-22 01:11:01,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:01,801 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:01,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (26)] Waiting until timeout for monitored process [2022-11-22 01:11:01,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:01,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 01:11:01,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 01:11:02,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:11:02,469 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:02,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099579714] [2022-11-22 01:11:02,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099579714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:02,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:02,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-22 01:11:02,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130819582] [2022-11-22 01:11:02,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:02,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 01:11:02,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:02,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 01:11:02,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:11:02,472 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 01:11:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:03,659 INFO L93 Difference]: Finished difference Result 106 states and 150 transitions. [2022-11-22 01:11:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 01:11:03,660 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2022-11-22 01:11:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:03,661 INFO L225 Difference]: With dead ends: 106 [2022-11-22 01:11:03,661 INFO L226 Difference]: Without dead ends: 89 [2022-11-22 01:11:03,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-11-22 01:11:03,662 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 52 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:03,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 489 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:11:03,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-22 01:11:03,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2022-11-22 01:11:03,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 60 states have internal predecessors, (74), 18 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (25), 22 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-22 01:11:03,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2022-11-22 01:11:03,672 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 50 [2022-11-22 01:11:03,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:03,672 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2022-11-22 01:11:03,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 01:11:03,673 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2022-11-22 01:11:03,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-22 01:11:03,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:03,674 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 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] [2022-11-22 01:11:03,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (26)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:03,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:03,886 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:03,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:03,886 INFO L85 PathProgramCache]: Analyzing trace with hash 992710810, now seen corresponding path program 1 times [2022-11-22 01:11:03,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:03,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169926946] [2022-11-22 01:11:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:03,887 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 [2022-11-22 01:11:03,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:03,888 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:03,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:03,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:11:03,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 01:11:04,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 01:11:04,444 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:04,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169926946] [2022-11-22 01:11:04,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169926946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:04,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1245452637] [2022-11-22 01:11:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:04,444 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:11:04,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:11:04,446 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:11:04,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-22 01:11:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:04,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 01:11:04,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-22 01:11:04,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 01:11:05,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1245452637] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:05,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525760771] [2022-11-22 01:11:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:05,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:11:05,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:11:05,763 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:11:05,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-22 01:11:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:05,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:11:05,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:06,036 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 01:11:06,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:06,350 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 01:11:06,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525760771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:06,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:11:06,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 10, 12] total 17 [2022-11-22 01:11:06,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008116923] [2022-11-22 01:11:06,351 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:11:06,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 01:11:06,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:06,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 01:11:06,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-22 01:11:06,352 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 01:11:06,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:06,972 INFO L93 Difference]: Finished difference Result 130 states and 174 transitions. [2022-11-22 01:11:06,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 01:11:06,972 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 53 [2022-11-22 01:11:06,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:06,973 INFO L225 Difference]: With dead ends: 130 [2022-11-22 01:11:06,973 INFO L226 Difference]: Without dead ends: 95 [2022-11-22 01:11:06,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-22 01:11:06,975 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 123 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:06,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 519 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:11:06,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-22 01:11:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2022-11-22 01:11:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 57 states have internal predecessors, (68), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (24), 21 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-22 01:11:06,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2022-11-22 01:11:06,983 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 53 [2022-11-22 01:11:06,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:06,984 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2022-11-22 01:11:06,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 01:11:06,984 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2022-11-22 01:11:06,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 01:11:06,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:06,985 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:11:06,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:07,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:07,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:07,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:11:07,603 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:07,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:07,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1377347757, now seen corresponding path program 1 times [2022-11-22 01:11:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:07,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127794252] [2022-11-22 01:11:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:07,604 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 [2022-11-22 01:11:07,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:07,605 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:07,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:07,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 01:11:07,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 01:11:08,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:11:10,097 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:10,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127794252] [2022-11-22 01:11:10,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127794252] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:10,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [262027504] [2022-11-22 01:11:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:10,098 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:11:10,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:11:10,099 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:11:10,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-22 01:11:10,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:10,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 01:11:10,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-22 01:11:10,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:11:12,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [262027504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:12,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408215610] [2022-11-22 01:11:12,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:12,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:11:12,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:11:12,099 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:11:12,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-22 01:11:12,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:12,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-22 01:11:12,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:11:12,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-22 01:11:16,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408215610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:16,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:11:16,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 15, 16] total 27 [2022-11-22 01:11:16,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524901465] [2022-11-22 01:11:16,983 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:11:16,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-22 01:11:16,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:16,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-22 01:11:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2022-11-22 01:11:16,984 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-22 01:11:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:18,601 INFO L93 Difference]: Finished difference Result 127 states and 168 transitions. [2022-11-22 01:11:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 01:11:18,602 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 55 [2022-11-22 01:11:18,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:18,603 INFO L225 Difference]: With dead ends: 127 [2022-11-22 01:11:18,603 INFO L226 Difference]: Without dead ends: 94 [2022-11-22 01:11:18,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 294 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:11:18,604 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 161 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:18,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 482 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 01:11:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-22 01:11:18,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2022-11-22 01:11:18,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-22 01:11:18,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2022-11-22 01:11:18,613 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 55 [2022-11-22 01:11:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:18,613 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2022-11-22 01:11:18,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-22 01:11:18,614 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2022-11-22 01:11:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-22 01:11:18,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:18,615 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 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] [2022-11-22 01:11:18,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:18,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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)] Ended with exit code 0 [2022-11-22 01:11:19,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:19,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:11:19,219 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:19,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1696305608, now seen corresponding path program 1 times [2022-11-22 01:11:19,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:19,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131793882] [2022-11-22 01:11:19,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:19,219 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 [2022-11-22 01:11:19,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:19,221 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:19,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (33)] Waiting until timeout for monitored process [2022-11-22 01:11:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:19,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:11:19,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 01:11:19,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:11:19,509 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:19,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131793882] [2022-11-22 01:11:19,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131793882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:19,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:19,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 01:11:19,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269785919] [2022-11-22 01:11:19,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:19,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:11:19,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:11:19,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:11:19,511 INFO L87 Difference]: Start difference. First operand 80 states and 106 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-22 01:11:19,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:19,969 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2022-11-22 01:11:19,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:11:19,970 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2022-11-22 01:11:19,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:19,970 INFO L225 Difference]: With dead ends: 104 [2022-11-22 01:11:19,971 INFO L226 Difference]: Without dead ends: 80 [2022-11-22 01:11:19,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:11:19,971 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 41 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:19,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 292 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:11:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-22 01:11:19,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-22 01:11:19,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (21), 20 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-22 01:11:19,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2022-11-22 01:11:19,980 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 60 [2022-11-22 01:11:19,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:19,980 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2022-11-22 01:11:19,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-22 01:11:19,980 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2022-11-22 01:11:19,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-22 01:11:19,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:19,982 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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] [2022-11-22 01:11:19,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (33)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:20,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:20,191 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:20,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1055709639, now seen corresponding path program 1 times [2022-11-22 01:11:20,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:20,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115985746] [2022-11-22 01:11:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:20,196 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 [2022-11-22 01:11:20,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:20,197 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:20,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (34)] Waiting until timeout for monitored process [2022-11-22 01:11:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:20,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:11:20,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:20,558 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 01:11:20,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:11:20,558 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:20,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115985746] [2022-11-22 01:11:20,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [115985746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:20,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:20,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 01:11:20,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132884659] [2022-11-22 01:11:20,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:20,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:11:20,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:20,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:11:20,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:11:20,560 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-22 01:11:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:21,144 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-11-22 01:11:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:11:21,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2022-11-22 01:11:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:21,146 INFO L225 Difference]: With dead ends: 106 [2022-11-22 01:11:21,146 INFO L226 Difference]: Without dead ends: 82 [2022-11-22 01:11:21,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:11:21,147 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 38 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:21,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 298 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:11:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-22 01:11:21,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-22 01:11:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 59 states have internal predecessors, (67), 17 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-22 01:11:21,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions. [2022-11-22 01:11:21,156 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 61 [2022-11-22 01:11:21,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:21,156 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions. [2022-11-22 01:11:21,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-22 01:11:21,156 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions. [2022-11-22 01:11:21,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 01:11:21,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:21,158 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 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] [2022-11-22 01:11:21,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (34)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:21,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:21,370 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:21,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:21,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1911580054, now seen corresponding path program 1 times [2022-11-22 01:11:21,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:21,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1253450117] [2022-11-22 01:11:21,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:21,371 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 [2022-11-22 01:11:21,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:21,372 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:21,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (35)] Waiting until timeout for monitored process [2022-11-22 01:11:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:21,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 01:11:21,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:21,616 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-22 01:11:21,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-22 01:11:21,882 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:21,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1253450117] [2022-11-22 01:11:21,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1253450117] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:21,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [337339461] [2022-11-22 01:11:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:21,882 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:11:21,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:11:21,887 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:11:21,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-22 01:11:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:22,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 01:11:22,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:22,456 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-22 01:11:22,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:22,711 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-22 01:11:22,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [337339461] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:22,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157190493] [2022-11-22 01:11:22,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:22,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:11:22,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:11:22,713 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:11:22,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-22 01:11:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:22,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-22 01:11:22,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 01:11:23,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:23,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157190493] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:11:23,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-22 01:11:23,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 10] total 24 [2022-11-22 01:11:23,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498183820] [2022-11-22 01:11:23,505 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-22 01:11:23,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 01:11:23,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:23,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 01:11:23,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-22 01:11:23,507 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-22 01:11:24,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:24,897 INFO L93 Difference]: Finished difference Result 111 states and 136 transitions. [2022-11-22 01:11:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 01:11:24,898 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) Word has length 62 [2022-11-22 01:11:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:24,899 INFO L225 Difference]: With dead ends: 111 [2022-11-22 01:11:24,899 INFO L226 Difference]: Without dead ends: 51 [2022-11-22 01:11:24,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:11:24,900 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 97 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:24,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 413 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 01:11:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-22 01:11:24,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-11-22 01:11:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-22 01:11:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-11-22 01:11:24,905 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2022-11-22 01:11:24,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:24,905 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-11-22 01:11:24,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-22 01:11:24,906 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-11-22 01:11:24,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 01:11:24,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:24,907 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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] [2022-11-22 01:11:24,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:25,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (35)] Ended with exit code 0 [2022-11-22 01:11:25,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-11-22 01:11:25,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:11:25,510 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:25,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:25,511 INFO L85 PathProgramCache]: Analyzing trace with hash -187739156, now seen corresponding path program 1 times [2022-11-22 01:11:25,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:25,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912247242] [2022-11-22 01:11:25,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:25,511 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 [2022-11-22 01:11:25,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:25,512 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:25,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (38)] Waiting until timeout for monitored process [2022-11-22 01:11:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:25,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:11:25,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 01:11:25,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:11:25,893 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:25,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912247242] [2022-11-22 01:11:25,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912247242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:25,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:25,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 01:11:25,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320569994] [2022-11-22 01:11:25,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:25,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:11:25,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:25,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:11:25,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:11:25,895 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-22 01:11:26,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:26,439 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-11-22 01:11:26,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:11:26,440 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2022-11-22 01:11:26,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:26,441 INFO L225 Difference]: With dead ends: 67 [2022-11-22 01:11:26,441 INFO L226 Difference]: Without dead ends: 50 [2022-11-22 01:11:26,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:11:26,442 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 32 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:26,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 241 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:11:26,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-22 01:11:26,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-11-22 01:11:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-22 01:11:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-11-22 01:11:26,448 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2022-11-22 01:11:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:26,448 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-11-22 01:11:26,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-22 01:11:26,449 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-11-22 01:11:26,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 01:11:26,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:26,450 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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] [2022-11-22 01:11:26,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (38)] Ended with exit code 0 [2022-11-22 01:11:26,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:26,659 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1230639261, now seen corresponding path program 1 times [2022-11-22 01:11:26,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:26,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486453323] [2022-11-22 01:11:26,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:26,659 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 [2022-11-22 01:11:26,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:26,661 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:26,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (39)] Waiting until timeout for monitored process [2022-11-22 01:11:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:26,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:11:26,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:27,039 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-22 01:11:27,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:11:27,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:27,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486453323] [2022-11-22 01:11:27,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486453323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:27,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:27,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 01:11:27,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967532564] [2022-11-22 01:11:27,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:27,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 01:11:27,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:27,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 01:11:27,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-22 01:11:27,041 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-22 01:11:27,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:27,503 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-11-22 01:11:27,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:11:27,504 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2022-11-22 01:11:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:27,505 INFO L225 Difference]: With dead ends: 64 [2022-11-22 01:11:27,505 INFO L226 Difference]: Without dead ends: 47 [2022-11-22 01:11:27,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-22 01:11:27,506 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 31 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:27,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 241 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:11:27,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-22 01:11:27,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-11-22 01:11:27,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-22 01:11:27,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2022-11-22 01:11:27,512 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 63 [2022-11-22 01:11:27,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:27,512 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2022-11-22 01:11:27,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-22 01:11:27,512 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2022-11-22 01:11:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 01:11:27,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:27,513 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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] [2022-11-22 01:11:27,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (39)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:27,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:27,727 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:27,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1065424800, now seen corresponding path program 1 times [2022-11-22 01:11:27,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:27,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495140863] [2022-11-22 01:11:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:27,727 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 [2022-11-22 01:11:27,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:27,728 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:27,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (40)] Waiting until timeout for monitored process [2022-11-22 01:11:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:27,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 01:11:27,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:28,102 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-22 01:11:28,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-22 01:11:28,580 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:28,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495140863] [2022-11-22 01:11:28,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495140863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:28,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1221337761] [2022-11-22 01:11:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:28,581 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 01:11:28,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 01:11:28,583 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 01:11:28,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-22 01:11:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:28,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 01:11:28,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:29,655 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-22 01:11:29,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-22 01:11:29,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1221337761] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:29,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904002234] [2022-11-22 01:11:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:29,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:11:29,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:11:29,883 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:11:29,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-22 01:11:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:29,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-22 01:11:29,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-22 01:11:30,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:11:30,916 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-22 01:11:30,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904002234] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:11:30,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 01:11:30,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 12, 9] total 28 [2022-11-22 01:11:30,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5079266] [2022-11-22 01:11:30,917 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 01:11:30,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-22 01:11:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-22 01:11:30,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:11:30,928 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2022-11-22 01:11:32,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:32,544 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2022-11-22 01:11:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 01:11:32,545 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) Word has length 63 [2022-11-22 01:11:32,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:32,546 INFO L225 Difference]: With dead ends: 88 [2022-11-22 01:11:32,546 INFO L226 Difference]: Without dead ends: 64 [2022-11-22 01:11:32,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 01:11:32,547 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 177 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:32,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 395 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:11:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-22 01:11:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2022-11-22 01:11:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-22 01:11:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2022-11-22 01:11:32,552 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 63 [2022-11-22 01:11:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:32,553 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2022-11-22 01:11:32,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2022-11-22 01:11:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2022-11-22 01:11:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 01:11:32,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:11:32,554 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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] [2022-11-22 01:11:32,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:32,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (40)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:32,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:33,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 01:11:33,160 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:11:33,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:11:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash -846570082, now seen corresponding path program 1 times [2022-11-22 01:11:33,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 01:11:33,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780600043] [2022-11-22 01:11:33,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:11:33,161 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 [2022-11-22 01:11:33,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 01:11:33,162 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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) [2022-11-22 01:11:33,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (43)] Waiting until timeout for monitored process [2022-11-22 01:11:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:11:33,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:11:33,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:11:33,278 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-22 01:11:33,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:11:33,278 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 01:11:33,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780600043] [2022-11-22 01:11:33,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780600043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:11:33,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:11:33,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:11:33,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85664733] [2022-11-22 01:11:33,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:11:33,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:11:33,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 01:11:33,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:11:33,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:11:33,281 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 01:11:33,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:11:33,300 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-11-22 01:11:33,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:11:33,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-11-22 01:11:33,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:11:33,302 INFO L225 Difference]: With dead ends: 48 [2022-11-22 01:11:33,302 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 01:11:33,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:11:33,303 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:11:33,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:11:33,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 01:11:33,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 01:11:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-22 01:11:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 01:11:33,304 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2022-11-22 01:11:33,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:11:33,305 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 01:11:33,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-22 01:11:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 01:11:33,305 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 01:11:33,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-22 01:11:33,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-22 01:11:33,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 (43)] Forceful destruction successful, exit code 0 [2022-11-22 01:11:33,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/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 [2022-11-22 01:11:33,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 01:11:35,072 INFO L899 garLoopResultBuilder]: For program point isnan_floatFINAL(line 59) no Hoare annotation was computed. [2022-11-22 01:11:35,072 INFO L902 garLoopResultBuilder]: At program point isnan_floatENTRY(line 59) the Hoare annotation is: true [2022-11-22 01:11:35,072 INFO L899 garLoopResultBuilder]: For program point isnan_floatEXIT(line 59) no Hoare annotation was computed. [2022-11-22 01:11:35,072 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2022-11-22 01:11:35,072 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2022-11-22 01:11:35,072 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (let ((.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|))) (or (and (not .cse0) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse1 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not .cse1) .cse0))) [2022-11-22 01:11:35,072 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 40 41) no Hoare annotation was computed. [2022-11-22 01:11:35,073 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-22 01:11:35,073 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 01:11:35,073 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-22 01:11:35,073 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2022-11-22 01:11:35,073 INFO L895 garLoopResultBuilder]: At program point L82(line 82) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (not .cse0) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)))) [2022-11-22 01:11:35,073 INFO L899 garLoopResultBuilder]: For program point L82-1(line 82) no Hoare annotation was computed. [2022-11-22 01:11:35,073 INFO L899 garLoopResultBuilder]: For program point L82-2(line 82) no Hoare annotation was computed. [2022-11-22 01:11:35,073 INFO L895 garLoopResultBuilder]: At program point L82-3(line 82) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (not .cse0) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)))) [2022-11-22 01:11:35,073 INFO L899 garLoopResultBuilder]: For program point L82-4(line 82) no Hoare annotation was computed. [2022-11-22 01:11:35,073 INFO L899 garLoopResultBuilder]: For program point L82-6(lines 82 85) no Hoare annotation was computed. [2022-11-22 01:11:35,073 INFO L902 garLoopResultBuilder]: At program point L70(line 70) the Hoare annotation is: true [2022-11-22 01:11:35,074 INFO L899 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2022-11-22 01:11:35,074 INFO L899 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2022-11-22 01:11:35,074 INFO L895 garLoopResultBuilder]: At program point L70-3(line 70) the Hoare annotation is: (and (= |ULTIMATE.start_main_#t~ret10#1| (_ bv1 32)) |ULTIMATE.start_main_#t~short12#1| (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) [2022-11-22 01:11:35,074 INFO L899 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2022-11-22 01:11:35,074 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 01:11:35,074 INFO L899 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2022-11-22 01:11:35,074 INFO L899 garLoopResultBuilder]: For program point L70-7(lines 70 71) no Hoare annotation was computed. [2022-11-22 01:11:35,074 INFO L899 garLoopResultBuilder]: For program point L70-9(lines 70 86) no Hoare annotation was computed. [2022-11-22 01:11:35,074 INFO L899 garLoopResultBuilder]: For program point L70-11(lines 70 86) no Hoare annotation was computed. [2022-11-22 01:11:35,074 INFO L899 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2022-11-22 01:11:35,074 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short12#1|)) (.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (not |ULTIMATE.start_main_#t~short16#1|))) (or (and .cse0 (= |ULTIMATE.start_main_#t~ret10#1| (_ bv1 32)) (= |ULTIMATE.start_main_#t~ret11#1| (_ bv1 32)) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (not .cse1) .cse2) (and .cse0 (= |ULTIMATE.start_main_#t~ret10#1| (_ bv0 32)) .cse1 .cse2))) [2022-11-22 01:11:35,074 INFO L899 garLoopResultBuilder]: For program point L71-1(line 71) no Hoare annotation was computed. [2022-11-22 01:11:35,075 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|))) (or (and (not .cse0) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse1 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not .cse1) .cse0))) [2022-11-22 01:11:35,075 INFO L899 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2022-11-22 01:11:35,075 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2022-11-22 01:11:35,075 INFO L895 garLoopResultBuilder]: At program point L71-3(line 71) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short12#1|) |ULTIMATE.start_main_#t~short15#1| (= |ULTIMATE.start_main_#t~ret13#1| (_ bv0 32)) (= |ULTIMATE.start_main_#t~ret10#1| (_ bv0 32)) (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|) (not |ULTIMATE.start_main_#t~short16#1|)) [2022-11-22 01:11:35,075 INFO L899 garLoopResultBuilder]: For program point L71-4(line 71) no Hoare annotation was computed. [2022-11-22 01:11:35,075 INFO L899 garLoopResultBuilder]: For program point L71-6(line 71) no Hoare annotation was computed. [2022-11-22 01:11:35,076 INFO L902 garLoopResultBuilder]: At program point L88(lines 61 89) the Hoare annotation is: true [2022-11-22 01:11:35,076 INFO L895 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) (not .cse0) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-11-22 01:11:35,076 INFO L895 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (not .cse0) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-11-22 01:11:35,076 INFO L899 garLoopResultBuilder]: For program point L76-1(line 76) no Hoare annotation was computed. [2022-11-22 01:11:35,076 INFO L899 garLoopResultBuilder]: For program point L76-2(line 76) no Hoare annotation was computed. [2022-11-22 01:11:35,076 INFO L895 garLoopResultBuilder]: At program point L76-3(line 76) the Hoare annotation is: (and (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_#t~short20#1| (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~ret18#1| (_ bv1 32)) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) [2022-11-22 01:11:35,077 INFO L899 garLoopResultBuilder]: For program point L76-4(line 76) no Hoare annotation was computed. [2022-11-22 01:11:35,077 INFO L899 garLoopResultBuilder]: For program point L76-6(lines 76 79) no Hoare annotation was computed. [2022-11-22 01:11:35,077 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2022-11-22 01:11:35,077 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 14 35) no Hoare annotation was computed. [2022-11-22 01:11:35,077 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2022-11-22 01:11:35,077 INFO L899 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2022-11-22 01:11:35,077 INFO L895 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (= |__fpclassify_float_#in~x| __fpclassify_float_~x) [2022-11-22 01:11:35,078 INFO L899 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2022-11-22 01:11:35,078 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2022-11-22 01:11:35,078 INFO L902 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 14 35) the Hoare annotation is: true [2022-11-22 01:11:35,078 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 14 35) no Hoare annotation was computed. [2022-11-22 01:11:35,081 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-22 01:11:35,084 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:11:35,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:11:35 BoogieIcfgContainer [2022-11-22 01:11:35,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:11:35,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:11:35,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:11:35,098 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:11:35,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:10:32" (3/4) ... [2022-11-22 01:11:35,102 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 01:11:35,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2022-11-22 01:11:35,108 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2022-11-22 01:11:35,115 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-22 01:11:35,115 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-22 01:11:35,116 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 01:11:35,116 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 01:11:35,148 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-11-22 01:11:35,148 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.eq~FLOAT(\result, y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || ((((!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(y, y)) && \result == x) && ~fp.eq~FLOAT(x, x)) && x == x) [2022-11-22 01:11:35,166 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:11:35,166 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:11:35,167 INFO L158 Benchmark]: Toolchain (without parser) took 64064.99ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 55.0MB in the beginning and 37.4MB in the end (delta: 17.7MB). Peak memory consumption was 53.4MB. Max. memory is 16.1GB. [2022-11-22 01:11:35,167 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:11:35,167 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.24ms. Allocated memory is still 77.6MB. Free memory was 54.8MB in the beginning and 43.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 01:11:35,167 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.28ms. Allocated memory is still 77.6MB. Free memory was 43.1MB in the beginning and 59.2MB in the end (delta: -16.0MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-11-22 01:11:35,168 INFO L158 Benchmark]: Boogie Preprocessor took 59.63ms. Allocated memory is still 77.6MB. Free memory was 59.2MB in the beginning and 57.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:11:35,168 INFO L158 Benchmark]: RCFGBuilder took 514.40ms. Allocated memory is still 77.6MB. Free memory was 57.7MB in the beginning and 43.0MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 01:11:35,168 INFO L158 Benchmark]: TraceAbstraction took 62958.63ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 42.4MB in the beginning and 41.6MB in the end (delta: 772.9kB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. [2022-11-22 01:11:35,169 INFO L158 Benchmark]: Witness Printer took 68.25ms. Allocated memory is still 113.2MB. Free memory was 41.6MB in the beginning and 37.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 01:11:35,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 56.6MB. Free memory is still 35.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.24ms. Allocated memory is still 77.6MB. Free memory was 54.8MB in the beginning and 43.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.28ms. Allocated memory is still 77.6MB. Free memory was 43.1MB in the beginning and 59.2MB in the end (delta: -16.0MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.63ms. Allocated memory is still 77.6MB. Free memory was 59.2MB in the beginning and 57.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 514.40ms. Allocated memory is still 77.6MB. Free memory was 57.7MB in the beginning and 43.0MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 62958.63ms. Allocated memory was 77.6MB in the beginning and 113.2MB in the end (delta: 35.7MB). Free memory was 42.4MB in the beginning and 41.6MB in the end (delta: 772.9kB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. * Witness Printer took 68.25ms. Allocated memory is still 113.2MB. Free memory was 41.6MB in the beginning and 37.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 83]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 62.8s, OverallIterations: 26, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 18.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1453 SdHoareTripleChecker+Valid, 12.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1404 mSDsluCounter, 8173 SdHoareTripleChecker+Invalid, 11.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6701 mSDsCounter, 505 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6039 IncrementalHoareTripleChecker+Invalid, 6545 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 505 mSolverCounterUnsat, 1472 mSDtfsCounter, 6039 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3251 GetRequests, 2872 SyntacticMatches, 8 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 13.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=13, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 190 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 152 PreInvPairs, 178 NumberOfFragments, 268 HoareAnnotationTreeSize, 152 FomulaSimplifications, 66 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 14346 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 27.7s InterpolantComputationTime, 2055 NumberOfCodeBlocks, 2055 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3067 ConstructedInterpolants, 13 QuantifiedInterpolants, 10235 SizeOfPredicates, 260 NumberOfNonLiveVariables, 4739 ConjunctsInSsa, 509 ConjunctsInUnsatCore, 63 InterpolantComputations, 20 PerfectInterpolantSequences, 1711/1986 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((~fp.eq~FLOAT(\result, y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || ((((!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(y, y)) && \result == x) && ~fp.eq~FLOAT(x, x)) && x == x) RESULT: Ultimate proved your program to be correct! [2022-11-22 01:11:35,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6b25bead-86d1-46f4-bd37-a7146cf32065/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE