./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0662b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0662b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS --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 0581f7e65f7fbcebfedbe5af78720fafbc68f000cf762482d99878eadfaec4df --- 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-8393723 [2022-11-19 07:03:33,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:03:33,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:03:33,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:03:33,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:03:33,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:03:33,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:03:33,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:03:33,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:03:33,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:03:33,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:03:33,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:03:33,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:03:33,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:03:33,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:03:33,543 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:03:33,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:03:33,553 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:03:33,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:03:33,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:03:33,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:03:33,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:03:33,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:03:33,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:03:33,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:03:33,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:03:33,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:03:33,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:03:33,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:03:33,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:03:33,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:03:33,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:03:33,599 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:03:33,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:03:33,603 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:03:33,604 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:03:33,605 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:03:33,605 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:03:33,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:03:33,607 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:03:33,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:03:33,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:03:33,655 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:03:33,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:03:33,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:03:33,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:03:33,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:03:33,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:03:33,658 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:03:33,659 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:03:33,659 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:03:33,659 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:03:33,660 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:03:33,660 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:03:33,660 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:03:33,661 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:03:33,661 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:03:33,661 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:03:33,662 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:03:33,662 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:03:33,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:03:33,664 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:03:33,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:03:33,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:03:33,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:03:33,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:03:33,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:03:33,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:03:33,666 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:03:33,666 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:03:33,667 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:03:33,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:03:33,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:03:33,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:03:33,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:33,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:03:33,669 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:03:33,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:03:33,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:03:33,670 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:03:33,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:03:33,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:03:33,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:03:33,671 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_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0581f7e65f7fbcebfedbe5af78720fafbc68f000cf762482d99878eadfaec4df [2022-11-19 07:03:33,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:03:34,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:03:34,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:03:34,007 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:03:34,008 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:03:34,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/double_req_bl_0662b.c [2022-11-19 07:03:34,091 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/data/76eef939a/014dd8716a254740b56e72d46f3aefa1/FLAG4fffa330f [2022-11-19 07:03:34,717 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:03:34,718 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/sv-benchmarks/c/float-newlib/double_req_bl_0662b.c [2022-11-19 07:03:34,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/data/76eef939a/014dd8716a254740b56e72d46f3aefa1/FLAG4fffa330f [2022-11-19 07:03:35,044 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/data/76eef939a/014dd8716a254740b56e72d46f3aefa1 [2022-11-19 07:03:35,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:03:35,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:03:35,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:35,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:03:35,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:03:35,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adfd156 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35, skipping insertion in model container [2022-11-19 07:03:35,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:03:35,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:03:35,359 WARN L234 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_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/sv-benchmarks/c/float-newlib/double_req_bl_0662b.c[6224,6237] [2022-11-19 07:03:35,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:35,384 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:03:35,489 WARN L234 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_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/sv-benchmarks/c/float-newlib/double_req_bl_0662b.c[6224,6237] [2022-11-19 07:03:35,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:35,512 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:03:35,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35 WrapperNode [2022-11-19 07:03:35,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:35,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:35,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:03:35,514 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:03:35,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,581 INFO L138 Inliner]: procedures = 19, calls = 87, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 240 [2022-11-19 07:03:35,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:35,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:03:35,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:03:35,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:03:35,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,624 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:03:35,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:03:35,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:03:35,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:03:35,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (1/1) ... [2022-11-19 07:03:35,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:35,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:35,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:03:35,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:03:35,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:03:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:03:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:03:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-19 07:03:35,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:03:35,744 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-11-19 07:03:35,744 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-11-19 07:03:35,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-19 07:03:35,744 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2022-11-19 07:03:35,744 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2022-11-19 07:03:35,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:03:35,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:03:35,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:03:35,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-11-19 07:03:35,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:03:35,899 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:03:35,901 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:03:36,710 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:03:36,814 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:03:36,814 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-19 07:03:36,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:36 BoogieIcfgContainer [2022-11-19 07:03:36,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:03:36,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:03:36,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:03:36,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:03:36,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:03:35" (1/3) ... [2022-11-19 07:03:36,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4ad49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:03:36, skipping insertion in model container [2022-11-19 07:03:36,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:35" (2/3) ... [2022-11-19 07:03:36,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4ad49d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:03:36, skipping insertion in model container [2022-11-19 07:03:36,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:36" (3/3) ... [2022-11-19 07:03:36,829 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0662b.c [2022-11-19 07:03:36,850 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:03:36,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:03:36,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:03:36,938 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;@5d68921, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:03:36,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:03:36,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 64 states have (on average 1.703125) internal successors, (109), 65 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:03:36,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 07:03:36,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:36,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:36,956 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:36,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:36,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1172168171, now seen corresponding path program 1 times [2022-11-19 07:03:36,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:36,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970268341] [2022-11-19 07:03:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:36,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:03:37,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:03:37,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:03:37,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970268341] [2022-11-19 07:03:37,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970268341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:03:37,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:03:37,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:03:37,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898774567] [2022-11-19 07:03:37,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:03:37,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:03:37,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:03:37,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:03:37,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:03:37,358 INFO L87 Difference]: Start difference. First operand has 72 states, 64 states have (on average 1.703125) internal successors, (109), 65 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:03:37,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:37,499 INFO L93 Difference]: Finished difference Result 142 states and 235 transitions. [2022-11-19 07:03:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:03:37,502 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 07:03:37,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:37,521 INFO L225 Difference]: With dead ends: 142 [2022-11-19 07:03:37,522 INFO L226 Difference]: Without dead ends: 69 [2022-11-19 07:03:37,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:03:37,541 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:37,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:03:37,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-19 07:03:37,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-19 07:03:37,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:03:37,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2022-11-19 07:03:37,611 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 10 [2022-11-19 07:03:37,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:37,612 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2022-11-19 07:03:37,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 07:03:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2022-11-19 07:03:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 07:03:37,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:37,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:37,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:03:37,617 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:03:37,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:37,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1903000333, now seen corresponding path program 1 times [2022-11-19 07:03:37,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:37,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385409835] [2022-11-19 07:03:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:37,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:03:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:03:37,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:03:37,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:03:37,985 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:03:37,985 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:03:37,988 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:03:37,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:03:37,994 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-19 07:03:37,999 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:03:38,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:03:38 BoogieIcfgContainer [2022-11-19 07:03:38,069 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:03:38,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:03:38,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:03:38,070 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:03:38,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:03:36" (3/4) ... [2022-11-19 07:03:38,076 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:03:38,077 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:03:38,083 INFO L158 Benchmark]: Toolchain (without parser) took 3032.75ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 83.8MB in the beginning and 95.9MB in the end (delta: -12.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-19 07:03:38,084 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory was 66.1MB in the beginning and 66.1MB in the end (delta: 98.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:03:38,091 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.17ms. Allocated memory is still 113.2MB. Free memory was 83.5MB in the beginning and 83.7MB in the end (delta: -248.3kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:03:38,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.13ms. Allocated memory is still 113.2MB. Free memory was 83.7MB in the beginning and 80.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:03:38,094 INFO L158 Benchmark]: Boogie Preprocessor took 48.21ms. Allocated memory is still 113.2MB. Free memory was 80.7MB in the beginning and 77.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:03:38,095 INFO L158 Benchmark]: RCFGBuilder took 1186.62ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 77.9MB in the beginning and 105.7MB in the end (delta: -27.8MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. [2022-11-19 07:03:38,097 INFO L158 Benchmark]: TraceAbstraction took 1248.73ms. Allocated memory is still 148.9MB. Free memory was 105.0MB in the beginning and 95.9MB in the end (delta: 9.0MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2022-11-19 07:03:38,098 INFO L158 Benchmark]: Witness Printer took 11.16ms. Allocated memory is still 148.9MB. Free memory was 95.9MB in the beginning and 95.9MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:03:38,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 113.2MB. Free memory was 66.1MB in the beginning and 66.1MB in the end (delta: 98.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 462.17ms. Allocated memory is still 113.2MB. Free memory was 83.5MB in the beginning and 83.7MB in the end (delta: -248.3kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.13ms. Allocated memory is still 113.2MB. Free memory was 83.7MB in the beginning and 80.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.21ms. Allocated memory is still 113.2MB. Free memory was 80.7MB in the beginning and 77.9MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1186.62ms. Allocated memory was 113.2MB in the beginning and 148.9MB in the end (delta: 35.7MB). Free memory was 77.9MB in the beginning and 105.7MB in the end (delta: -27.8MB). Peak memory consumption was 33.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1248.73ms. Allocated memory is still 148.9MB. Free memory was 105.0MB in the beginning and 95.9MB in the end (delta: 9.0MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Witness Printer took 11.16ms. Allocated memory is still 148.9MB. Free memory was 95.9MB in the beginning and 95.9MB in the end (delta: 2.7kB). 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: 262]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 261. Possible FailurePath: [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L253] double x = 0.0; [L254] double y = __VERIFIER_nondet_double(); [L256] COND TRUE y < 0.0 [L258] CALL, EXPR __ieee754_atan2(y, x) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [\old(x)=0, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={4:0}, atanhi_atan={5:0}, atanlo_atan={6:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [\old(x)=0, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={4:0}, atanhi_atan={5:0}, atanlo_atan={6:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, ix=0, lx=-4609434220761186304, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [\old(x)=0, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={4:0}, atanhi_atan={5:0}, atanlo_atan={6:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, hy=-2147483647, ix=0, iy=1, lx=-4609434220761186304, ly=0, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [\old(x)=0, \old(y)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, aT_atan={4:0}, atanhi_atan={5:0}, atanlo_atan={6:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=0, hy=-2147483647, ix=0, iy=1, lx=-4609434220761186304, ly=0, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L258] RET, EXPR __ieee754_atan2(y, x) [L258] double res = __ieee754_atan2(y, x); [L261] COND TRUE res != -pi_o_2 VAL [aT_atan={4:0}, atanhi_atan={5:0}, atanlo_atan={6:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] [L262] reach_error() VAL [aT_atan={4:0}, atanhi_atan={5:0}, atanlo_atan={6:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=0, y=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 85 mSDtfsCounter, 15 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 07:03:38,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0662b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS --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 0581f7e65f7fbcebfedbe5af78720fafbc68f000cf762482d99878eadfaec4df --- 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-8393723 [2022-11-19 07:03:40,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:03:40,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:03:40,758 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:03:40,759 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:03:40,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:03:40,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:03:40,772 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:03:40,776 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:03:40,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:03:40,786 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:03:40,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:03:40,790 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:03:40,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:03:40,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:03:40,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:03:40,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:03:40,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:03:40,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:03:40,812 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:03:40,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:03:40,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:03:40,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:03:40,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:03:40,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:03:40,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:03:40,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:03:40,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:03:40,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:03:40,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:03:40,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:03:40,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:03:40,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:03:40,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:03:40,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:03:40,853 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:03:40,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:03:40,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:03:40,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:03:40,858 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:03:40,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:03:40,860 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:03:40,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:03:40,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:03:40,919 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:03:40,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:03:40,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:03:40,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:03:40,922 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:03:40,922 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:03:40,922 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:03:40,923 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:03:40,924 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:03:40,925 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:03:40,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:03:40,927 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:03:40,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:03:40,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:03:40,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:03:40,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:03:40,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:03:40,929 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:03:40,929 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:03:40,929 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:03:40,930 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:03:40,930 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:03:40,930 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:03:40,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:03:40,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:03:40,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:03:40,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:03:40,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:40,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:03:40,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:03:40,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:03:40,934 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:03:40,934 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:03:40,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:03:40,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:03:40,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:03:40,935 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_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0581f7e65f7fbcebfedbe5af78720fafbc68f000cf762482d99878eadfaec4df [2022-11-19 07:03:41,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:03:41,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:03:41,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:03:41,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:03:41,446 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:03:41,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/double_req_bl_0662b.c [2022-11-19 07:03:41,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/data/8b01bd753/3346332677c54f7da473709d373a9479/FLAGf7cee0873 [2022-11-19 07:03:42,205 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:03:42,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/sv-benchmarks/c/float-newlib/double_req_bl_0662b.c [2022-11-19 07:03:42,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/data/8b01bd753/3346332677c54f7da473709d373a9479/FLAGf7cee0873 [2022-11-19 07:03:42,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/data/8b01bd753/3346332677c54f7da473709d373a9479 [2022-11-19 07:03:42,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:03:42,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:03:42,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:42,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:03:42,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:03:42,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:42,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cfbe21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42, skipping insertion in model container [2022-11-19 07:03:42,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:42,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:03:42,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:03:42,849 WARN L234 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_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/sv-benchmarks/c/float-newlib/double_req_bl_0662b.c[6224,6237] [2022-11-19 07:03:42,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:42,899 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:03:42,956 WARN L234 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_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/sv-benchmarks/c/float-newlib/double_req_bl_0662b.c[6224,6237] [2022-11-19 07:03:42,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:03:42,984 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:03:42,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42 WrapperNode [2022-11-19 07:03:42,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:03:42,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:42,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:03:42,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:03:42,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,050 INFO L138 Inliner]: procedures = 22, calls = 87, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 220 [2022-11-19 07:03:43,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:03:43,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:03:43,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:03:43,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:03:43,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,139 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:03:43,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:03:43,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:03:43,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:03:43,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (1/1) ... [2022-11-19 07:03:43,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:03:43,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:03:43,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:03:43,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:03:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:03:43,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-11-19 07:03:43,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-19 07:03:43,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:03:43,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:03:43,259 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2022-11-19 07:03:43,259 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2022-11-19 07:03:43,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2022-11-19 07:03:43,260 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double [2022-11-19 07:03:43,260 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double [2022-11-19 07:03:43,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:03:43,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:03:43,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:03:43,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:03:43,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:03:43,436 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:03:43,439 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:04:11,522 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:04:11,530 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:04:11,531 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-19 07:04:11,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:04:11 BoogieIcfgContainer [2022-11-19 07:04:11,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:04:11,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:04:11,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:04:11,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:04:11,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:03:42" (1/3) ... [2022-11-19 07:04:11,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785aa24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:04:11, skipping insertion in model container [2022-11-19 07:04:11,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:03:42" (2/3) ... [2022-11-19 07:04:11,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785aa24a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:04:11, skipping insertion in model container [2022-11-19 07:04:11,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:04:11" (3/3) ... [2022-11-19 07:04:11,547 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0662b.c [2022-11-19 07:04:11,569 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:04:11,570 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:04:11,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:04:11,651 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;@2e0cbd20, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:04:11,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:04:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 80 states have (on average 1.675) internal successors, (134), 81 states have internal predecessors, (134), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:04:11,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 07:04:11,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:11,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:11,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:11,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:11,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1510954264, now seen corresponding path program 1 times [2022-11-19 07:04:11,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:04:11,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590756412] [2022-11-19 07:04:11,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:11,699 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 [2022-11-19 07:04:11,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:04:11,706 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:04:11,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:04:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:12,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 07:04:12,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:12,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:04:12,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:04:12,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590756412] [2022-11-19 07:04:12,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590756412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:12,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:12,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:04:12,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568590944] [2022-11-19 07:04:12,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:12,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:04:12,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:04:12,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:04:12,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:04:12,316 INFO L87 Difference]: Start difference. First operand has 88 states, 80 states have (on average 1.675) internal successors, (134), 81 states have internal predecessors, (134), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-19 07:04:12,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:12,361 INFO L93 Difference]: Finished difference Result 173 states and 284 transitions. [2022-11-19 07:04:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:04:12,364 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 07:04:12,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:12,374 INFO L225 Difference]: With dead ends: 173 [2022-11-19 07:04:12,375 INFO L226 Difference]: Without dead ends: 84 [2022-11-19 07:04:12,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:04:12,384 INFO L413 NwaCegarLoop]: 125 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, 125 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 [2022-11-19 07:04:12,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:04:12,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-19 07:04:12,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-19 07:04:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 77 states have internal predecessors, (112), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:04:12,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2022-11-19 07:04:12,443 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 11 [2022-11-19 07:04:12,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:12,444 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2022-11-19 07:04:12,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-11-19 07:04:12,445 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2022-11-19 07:04:12,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-19 07:04:12,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:12,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:12,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:04:12,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:04:12,666 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:12,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:12,667 INFO L85 PathProgramCache]: Analyzing trace with hash 370347393, now seen corresponding path program 1 times [2022-11-19 07:04:12,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:04:12,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992231302] [2022-11-19 07:04:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:12,669 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 [2022-11-19 07:04:12,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:04:12,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:04:12,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:04:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:13,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 07:04:13,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:13,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2022-11-19 07:04:15,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-19 07:04:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:18,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:04:18,758 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:04:18,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992231302] [2022-11-19 07:04:18,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992231302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:18,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:18,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:04:18,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107485629] [2022-11-19 07:04:18,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:18,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:04:18,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:04:18,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:04:18,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:04:18,764 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2022-11-19 07:04:22,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.77s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:04:22,409 INFO L93 Difference]: Finished difference Result 88 states and 123 transitions. [2022-11-19 07:04:22,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:04:22,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-19 07:04:22,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:04:22,646 INFO L225 Difference]: With dead ends: 88 [2022-11-19 07:04:22,646 INFO L226 Difference]: Without dead ends: 84 [2022-11-19 07:04:22,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:04:22,649 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 5 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:04:22,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 727 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 67 Unchecked, 2.9s Time] [2022-11-19 07:04:22,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-19 07:04:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-19 07:04:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.4415584415584415) internal successors, (111), 77 states have internal predecessors, (111), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:04:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 119 transitions. [2022-11-19 07:04:22,663 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 119 transitions. Word has length 13 [2022-11-19 07:04:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:04:22,664 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 119 transitions. [2022-11-19 07:04:22,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 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) [2022-11-19 07:04:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 119 transitions. [2022-11-19 07:04:22,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 07:04:22,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:04:22,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:04:22,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:04:22,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:04:22,868 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:04:22,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:04:22,869 INFO L85 PathProgramCache]: Analyzing trace with hash 639744913, now seen corresponding path program 1 times [2022-11-19 07:04:22,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:04:22,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241677962] [2022-11-19 07:04:22,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:04:22,871 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 [2022-11-19 07:04:22,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:04:22,872 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:04:22,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:04:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:04:23,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:04:23,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:04:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:04:29,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:04:29,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:04:29,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241677962] [2022-11-19 07:04:29,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241677962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:04:29,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:04:29,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:04:29,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379635377] [2022-11-19 07:04:29,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:04:29,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:04:29,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:04:29,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:04:29,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:04:29,341 INFO L87 Difference]: Start difference. First operand 84 states and 119 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-19 07:04:34,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:39,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:40,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:43,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:45,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:49,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:53,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:55,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:04:57,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:01,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:01,097 INFO L93 Difference]: Finished difference Result 101 states and 139 transitions. [2022-11-19 07:05:01,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:05:01,410 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 07:05:01,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:01,411 INFO L225 Difference]: With dead ends: 101 [2022-11-19 07:05:01,411 INFO L226 Difference]: Without dead ends: 97 [2022-11-19 07:05:01,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:05:01,413 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 97 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:01,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 469 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 7 Unknown, 38 Unchecked, 30.0s Time] [2022-11-19 07:05:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-19 07:05:01,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2022-11-19 07:05:01,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 77 states have internal predecessors, (110), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:05:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 118 transitions. [2022-11-19 07:05:01,432 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 118 transitions. Word has length 16 [2022-11-19 07:05:01,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:01,432 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 118 transitions. [2022-11-19 07:05:01,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-11-19 07:05:01,433 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 118 transitions. [2022-11-19 07:05:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:05:01,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:01,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:01,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:01,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:01,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:01,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash 606053707, now seen corresponding path program 1 times [2022-11-19 07:05:01,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:05:01,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786073735] [2022-11-19 07:05:01,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:01,656 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 [2022-11-19 07:05:01,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:05:01,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:05:01,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:02,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:05:02,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:09,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:09,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:05:09,616 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:05:09,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786073735] [2022-11-19 07:05:09,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786073735] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:09,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:05:09,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:05:09,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157387511] [2022-11-19 07:05:09,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:09,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:05:09,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:05:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:05:09,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:05:09,619 INFO L87 Difference]: Start difference. First operand 84 states and 118 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-19 07:05:14,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:19,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.62s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:22,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:25,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:27,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:31,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.99s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:35,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:38,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:41,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:41,719 INFO L93 Difference]: Finished difference Result 101 states and 138 transitions. [2022-11-19 07:05:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:05:42,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 07:05:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:42,005 INFO L225 Difference]: With dead ends: 101 [2022-11-19 07:05:42,006 INFO L226 Difference]: Without dead ends: 97 [2022-11-19 07:05:42,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:05:42,007 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 55 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 30.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:42,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 499 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 7 Unknown, 62 Unchecked, 30.8s Time] [2022-11-19 07:05:42,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-19 07:05:42,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 84. [2022-11-19 07:05:42,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 77 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:05:42,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 117 transitions. [2022-11-19 07:05:42,020 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 117 transitions. Word has length 18 [2022-11-19 07:05:42,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:42,020 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 117 transitions. [2022-11-19 07:05:42,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 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) [2022-11-19 07:05:42,021 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 117 transitions. [2022-11-19 07:05:42,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:05:42,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:42,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:42,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:42,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:42,226 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1900745649, now seen corresponding path program 1 times [2022-11-19 07:05:42,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:05:42,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164562867] [2022-11-19 07:05:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:42,227 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 [2022-11-19 07:05:42,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:05:42,230 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:05:42,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:42,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:05:42,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:44,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:05:44,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:05:44,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164562867] [2022-11-19 07:05:44,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164562867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:44,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:05:44,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:05:44,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073296094] [2022-11-19 07:05:44,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:44,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:05:44,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:05:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:05:44,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:05:44,894 INFO L87 Difference]: Start difference. First operand 84 states and 117 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2022-11-19 07:05:49,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.92s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:49,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:49,510 INFO L93 Difference]: Finished difference Result 157 states and 218 transitions. [2022-11-19 07:05:49,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:05:49,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 07:05:49,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:49,513 INFO L225 Difference]: With dead ends: 157 [2022-11-19 07:05:49,513 INFO L226 Difference]: Without dead ends: 88 [2022-11-19 07:05:49,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:05:49,515 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 8 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:49,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 616 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 1 Unknown, 35 Unchecked, 4.3s Time] [2022-11-19 07:05:49,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-19 07:05:49,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2022-11-19 07:05:49,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.4025974025974026) internal successors, (108), 77 states have internal predecessors, (108), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:05:49,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 116 transitions. [2022-11-19 07:05:49,528 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 116 transitions. Word has length 18 [2022-11-19 07:05:49,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:49,528 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 116 transitions. [2022-11-19 07:05:49,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2022-11-19 07:05:49,529 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 116 transitions. [2022-11-19 07:05:49,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:05:49,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:49,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:49,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:49,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:49,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:49,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:49,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1843487347, now seen corresponding path program 1 times [2022-11-19 07:05:49,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:05:49,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1562819360] [2022-11-19 07:05:49,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:49,744 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 [2022-11-19 07:05:49,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:05:49,745 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:05:49,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:50,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:05:50,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:53,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:05:53,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:05:53,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1562819360] [2022-11-19 07:05:53,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1562819360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:53,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:05:53,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:05:53,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968244251] [2022-11-19 07:05:53,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:53,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:05:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:05:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:05:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2022-11-19 07:05:53,822 INFO L87 Difference]: Start difference. First operand 84 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-11-19 07:05:59,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:05:59,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:59,124 INFO L93 Difference]: Finished difference Result 152 states and 209 transitions. [2022-11-19 07:05:59,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:05:59,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 07:05:59,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:59,397 INFO L225 Difference]: With dead ends: 152 [2022-11-19 07:05:59,398 INFO L226 Difference]: Without dead ends: 82 [2022-11-19 07:05:59,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=11, Invalid=17, Unknown=2, NotChecked=0, Total=30 [2022-11-19 07:05:59,400 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 7 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:59,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 397 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 13 Unchecked, 3.1s Time] [2022-11-19 07:05:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-19 07:05:59,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2022-11-19 07:05:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 71 states have (on average 1.380281690140845) internal successors, (98), 71 states have internal predecessors, (98), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:05:59,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 106 transitions. [2022-11-19 07:05:59,421 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 106 transitions. Word has length 18 [2022-11-19 07:05:59,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:59,429 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 106 transitions. [2022-11-19 07:05:59,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2022-11-19 07:05:59,430 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 106 transitions. [2022-11-19 07:05:59,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 07:05:59,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:59,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:59,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:59,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:59,634 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:59,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:59,634 INFO L85 PathProgramCache]: Analyzing trace with hash 89584188, now seen corresponding path program 1 times [2022-11-19 07:05:59,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:05:59,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1565497708] [2022-11-19 07:05:59,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:59,635 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 [2022-11-19 07:05:59,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:05:59,642 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:05:59,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:05:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:00,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-19 07:06:00,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:02,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:02,352 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:02,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1565497708] [2022-11-19 07:06:02,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1565497708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:02,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:02,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:06:02,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639668312] [2022-11-19 07:06:02,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:02,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:06:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:06:02,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:06:02,355 INFO L87 Difference]: Start difference. First operand 78 states and 106 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 07:06:06,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:06,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:06,133 INFO L93 Difference]: Finished difference Result 133 states and 176 transitions. [2022-11-19 07:06:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:06:06,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-19 07:06:06,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:06,403 INFO L225 Difference]: With dead ends: 133 [2022-11-19 07:06:06,403 INFO L226 Difference]: Without dead ends: 71 [2022-11-19 07:06:06,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:06,407 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 10 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:06,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 389 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 12 Unchecked, 3.1s Time] [2022-11-19 07:06:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-19 07:06:06,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2022-11-19 07:06:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:06:06,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2022-11-19 07:06:06,434 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 85 transitions. Word has length 19 [2022-11-19 07:06:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:06,435 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 85 transitions. [2022-11-19 07:06:06,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-11-19 07:06:06,436 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 85 transitions. [2022-11-19 07:06:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:06:06,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:06,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:06,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:06:06,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:06:06,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:06,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1087523227, now seen corresponding path program 1 times [2022-11-19 07:06:06,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:06,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858166087] [2022-11-19 07:06:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:06,641 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 [2022-11-19 07:06:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:06,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:06:06,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-19 07:06:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:07,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 07:06:07,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:13,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:13,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:13,264 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:13,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858166087] [2022-11-19 07:06:13,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858166087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:13,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:13,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:06:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180782424] [2022-11-19 07:06:13,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:13,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:06:13,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:06:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=40, Unknown=1, NotChecked=0, Total=56 [2022-11-19 07:06:13,266 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) [2022-11-19 07:06:15,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:17,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:17,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:17,098 INFO L93 Difference]: Finished difference Result 75 states and 91 transitions. [2022-11-19 07:06:17,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:06:17,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-19 07:06:17,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:17,100 INFO L225 Difference]: With dead ends: 75 [2022-11-19 07:06:17,100 INFO L226 Difference]: Without dead ends: 71 [2022-11-19 07:06:17,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=19, Invalid=52, Unknown=1, NotChecked=0, Total=72 [2022-11-19 07:06:17,102 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 13 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:17,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 433 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 22 Unchecked, 3.5s Time] [2022-11-19 07:06:17,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-19 07:06:17,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2022-11-19 07:06:17,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 60 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:06:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2022-11-19 07:06:17,112 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 21 [2022-11-19 07:06:17,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:17,112 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2022-11-19 07:06:17,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) [2022-11-19 07:06:17,113 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2022-11-19 07:06:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 07:06:17,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:17,114 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:17,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-19 07:06:17,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:06:17,322 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:17,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1388850208, now seen corresponding path program 1 times [2022-11-19 07:06:17,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:17,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980800174] [2022-11-19 07:06:17,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:17,323 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 [2022-11-19 07:06:17,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:17,324 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:06:17,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:06:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:18,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:06:18,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:22,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:22,578 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:22,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980800174] [2022-11-19 07:06:22,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980800174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:22,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:22,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:06:22,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480840130] [2022-11-19 07:06:22,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:22,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:06:22,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:22,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:06:22,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:06:22,580 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-11-19 07:06:23,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:23,447 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2022-11-19 07:06:23,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:06:23,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-19 07:06:23,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:23,450 INFO L225 Difference]: With dead ends: 75 [2022-11-19 07:06:23,450 INFO L226 Difference]: Without dead ends: 68 [2022-11-19 07:06:23,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:06:23,452 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 18 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:23,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 417 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2022-11-19 07:06:23,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-19 07:06:23,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2022-11-19 07:06:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 57 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 07:06:23,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2022-11-19 07:06:23,462 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 23 [2022-11-19 07:06:23,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:23,463 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2022-11-19 07:06:23,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2022-11-19 07:06:23,463 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2022-11-19 07:06:23,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-19 07:06:23,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:23,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:23,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:06:23,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:06:23,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:23,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:23,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1633273052, now seen corresponding path program 1 times [2022-11-19 07:06:23,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:23,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143521928] [2022-11-19 07:06:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:23,674 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 [2022-11-19 07:06:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:23,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:06:23,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-19 07:06:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:06:24,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:06:24,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:06:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:06:25,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:06:25,618 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 07:06:25,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143521928] [2022-11-19 07:06:25,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143521928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:06:25,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:06:25,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:06:25,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217374298] [2022-11-19 07:06:25,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:06:25,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:06:25,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 07:06:25,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:06:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:06:25,620 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:06:29,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 07:06:29,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:06:29,135 INFO L93 Difference]: Finished difference Result 98 states and 120 transitions. [2022-11-19 07:06:29,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:06:29,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-11-19 07:06:29,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:06:29,416 INFO L225 Difference]: With dead ends: 98 [2022-11-19 07:06:29,416 INFO L226 Difference]: Without dead ends: 62 [2022-11-19 07:06:29,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:06:29,418 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 5 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:06:29,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 269 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 5 Unchecked, 3.0s Time] [2022-11-19 07:06:29,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-19 07:06:29,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-19 07:06:29,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 56 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:06:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2022-11-19 07:06:29,426 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 26 [2022-11-19 07:06:29,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:06:29,426 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2022-11-19 07:06:29,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:06:29,427 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2022-11-19 07:06:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 07:06:29,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:06:29,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:06:29,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:06:29,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 07:06:29,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:06:29,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:06:29,635 INFO L85 PathProgramCache]: Analyzing trace with hash -502020589, now seen corresponding path program 1 times [2022-11-19 07:06:29,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:06:29,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418208842] [2022-11-19 07:06:29,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:06:29,635 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 [2022-11-19 07:06:29,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:06:29,637 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 07:06:29,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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)] Waiting until timeout for monitored process [2022-11-19 07:06:30,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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)] Forceful destruction successful, exit code 139 [2022-11-19 07:06:30,132 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-19 07:06:30,135 INFO L158 Benchmark]: Toolchain (without parser) took 167613.48ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 44.1MB in the beginning and 40.4MB in the end (delta: 3.8MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2022-11-19 07:06:30,136 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 62.9MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:06:30,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.51ms. Allocated memory is still 62.9MB. Free memory was 44.0MB in the beginning and 41.9MB in the end (delta: 2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:06:30,137 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.28ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 39.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:06:30,137 INFO L158 Benchmark]: Boogie Preprocessor took 95.50ms. Allocated memory is still 62.9MB. Free memory was 39.3MB in the beginning and 36.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:06:30,140 INFO L158 Benchmark]: RCFGBuilder took 28386.16ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 36.4MB in the beginning and 53.3MB in the end (delta: -16.9MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. [2022-11-19 07:06:30,141 INFO L158 Benchmark]: TraceAbstraction took 138597.34ms. Allocated memory is still 79.7MB. Free memory was 52.5MB in the beginning and 40.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2022-11-19 07:06:30,144 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 62.9MB. Free memory is still 44.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.51ms. Allocated memory is still 62.9MB. Free memory was 44.0MB in the beginning and 41.9MB in the end (delta: 2.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.28ms. Allocated memory is still 62.9MB. Free memory was 41.7MB in the beginning and 39.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 95.50ms. Allocated memory is still 62.9MB. Free memory was 39.3MB in the beginning and 36.4MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 28386.16ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 36.4MB in the beginning and 53.3MB in the end (delta: -16.9MB). Peak memory consumption was 16.3MB. Max. memory is 16.1GB. * TraceAbstraction took 138597.34ms. Allocated memory is still 79.7MB. Free memory was 52.5MB in the beginning and 40.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:06:30,394 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-19 07:06:30,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daed1f2d-96f5-43ab-8b46-b3e204e86d1e/bin/utaipan-I9t0OCRTmS/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) with exit command (exit)) Received EOF on stdin. No stderr output.