./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF --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 27ce6cfdcb9dfa0489011437b04a08db6e71d8edccf3dd91706f7dddce0310b4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:20:46,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:20:46,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:20:46,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:20:46,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:20:46,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:20:46,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:20:46,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:20:46,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:20:46,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:20:46,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:20:46,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:20:46,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:20:46,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:20:46,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:20:46,851 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:20:46,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:20:46,854 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:20:46,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:20:46,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:20:46,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:20:46,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:20:46,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:20:46,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:20:46,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:20:46,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:20:46,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:20:46,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:20:46,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:20:46,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:20:46,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:20:46,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:20:46,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:20:46,876 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:20:46,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:20:46,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:20:46,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:20:46,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:20:46,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:20:46,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:20:46,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:20:46,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 22:20:46,909 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:20:46,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:20:46,911 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:20:46,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:20:46,911 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:20:46,912 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:20:46,912 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:20:46,912 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:20:46,913 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:20:46,913 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:20:46,913 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:20:46,914 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:20:46,914 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:20:46,914 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:20:46,915 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:20:46,915 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:20:46,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:20:46,916 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:20:46,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:20:46,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:20:46,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:20:46,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:20:46,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:20:46,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:20:46,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:20:46,919 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:20:46,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:20:46,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:20:46,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:20:46,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:20:46,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:20:46,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:20:46,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:20:46,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:20:46,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:20:46,922 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:20:46,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:20:46,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:20:46,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:20:46,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:20:46,923 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27ce6cfdcb9dfa0489011437b04a08db6e71d8edccf3dd91706f7dddce0310b4 [2021-11-12 22:20:47,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:20:47,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:20:47,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:20:47,220 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:20:47,221 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:20:47,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2021-11-12 22:20:47,294 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/data/6eeb952d0/7d6ebf05dd934ee9a7e6d49af307044b/FLAG1b748d8c4 [2021-11-12 22:20:47,770 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:20:47,771 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2021-11-12 22:20:47,778 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/data/6eeb952d0/7d6ebf05dd934ee9a7e6d49af307044b/FLAG1b748d8c4 [2021-11-12 22:20:48,127 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/data/6eeb952d0/7d6ebf05dd934ee9a7e6d49af307044b [2021-11-12 22:20:48,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:20:48,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:20:48,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:20:48,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:20:48,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:20:48,137 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33beb1a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48, skipping insertion in model container [2021-11-12 22:20:48,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:20:48,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:20:48,452 WARN L228 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_4f2af119-fa59-4bf2-bd81-4738687e1fec/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c[5556,5569] [2021-11-12 22:20:48,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:20:48,472 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:20:48,525 WARN L228 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_4f2af119-fa59-4bf2-bd81-4738687e1fec/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c[5556,5569] [2021-11-12 22:20:48,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:20:48,550 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:20:48,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48 WrapperNode [2021-11-12 22:20:48,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:20:48,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:20:48,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:20:48,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:20:48,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:20:48,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:20:48,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:20:48,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:20:48,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,678 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:20:48,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:20:48,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:20:48,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:20:48,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (1/1) ... [2021-11-12 22:20:48,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:20:48,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:20:48,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:20:48,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:20:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 22:20:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:20:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-12 22:20:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-12 22:20:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-12 22:20:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-11-12 22:20:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-11-12 22:20:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:20:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:20:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-12 22:20:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-12 22:20:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2021-11-12 22:20:48,790 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2021-11-12 22:20:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:20:49,509 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:20:49,510 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-12 22:20:49,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:20:49 BoogieIcfgContainer [2021-11-12 22:20:49,519 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:20:49,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:20:49,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:20:49,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:20:49,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:20:48" (1/3) ... [2021-11-12 22:20:49,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2750fb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:20:49, skipping insertion in model container [2021-11-12 22:20:49,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:48" (2/3) ... [2021-11-12 22:20:49,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2750fb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:20:49, skipping insertion in model container [2021-11-12 22:20:49,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:20:49" (3/3) ... [2021-11-12 22:20:49,531 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0684b.c [2021-11-12 22:20:49,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:20:49,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:20:49,601 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:20:49,608 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:20:49,608 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:20:49,627 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) [2021-11-12 22:20:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-12 22:20:49,632 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:20:49,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:20:49,633 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:20:49,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:20:49,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1749894934, now seen corresponding path program 1 times [2021-11-12 22:20:49,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:20:49,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611814888] [2021-11-12 22:20:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:20:49,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:20:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:20:49,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:20:49,863 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:20:49,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611814888] [2021-11-12 22:20:49,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611814888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:20:49,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:20:49,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:20:49,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276680376] [2021-11-12 22:20:49,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:20:49,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:20:49,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:20:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:20:49,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:20:49,906 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:20:50,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:20:50,032 INFO L93 Difference]: Finished difference Result 143 states and 237 transitions. [2021-11-12 22:20:50,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:20:50,037 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-12 22:20:50,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:20:50,049 INFO L225 Difference]: With dead ends: 143 [2021-11-12 22:20:50,049 INFO L226 Difference]: Without dead ends: 69 [2021-11-12 22:20:50,054 INFO L932 BasicCegarLoop]: 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 [2021-11-12 22:20:50,062 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.56ms IncrementalHoareTripleChecker+Time [2021-11-12 22:20:50,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 14 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 58.56ms Time] [2021-11-12 22:20:50,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-12 22:20:50,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-12 22:20:50,106 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) [2021-11-12 22:20:50,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2021-11-12 22:20:50,111 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 12 [2021-11-12 22:20:50,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:20:50,111 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2021-11-12 22:20:50,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:20:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2021-11-12 22:20:50,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-12 22:20:50,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:20:50,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:20:50,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:20:50,114 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:20:50,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:20:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1002918344, now seen corresponding path program 1 times [2021-11-12 22:20:50,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:20:50,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722783251] [2021-11-12 22:20:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:20:50,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:20:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:20:50,269 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 22:20:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 22:20:50,447 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 22:20:50,447 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 22:20:50,449 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:20:50,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:20:50,457 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 22:20:50,459 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:20:50,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:20:50 BoogieIcfgContainer [2021-11-12 22:20:50,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:20:50,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:20:50,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:20:50,531 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:20:50,531 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:20:49" (3/4) ... [2021-11-12 22:20:50,536 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:20:50,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:20:50,538 INFO L158 Benchmark]: Toolchain (without parser) took 2405.74ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 53.2MB in the beginning and 78.6MB in the end (delta: -25.4MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-11-12 22:20:50,539 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:20:50,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.63ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 53.0MB in the beginning and 100.9MB in the end (delta: -47.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:20:50,547 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.62ms. Allocated memory is still 130.0MB. Free memory was 100.9MB in the beginning and 98.4MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:20:50,547 INFO L158 Benchmark]: Boogie Preprocessor took 83.42ms. Allocated memory is still 130.0MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:20:50,551 INFO L158 Benchmark]: RCFGBuilder took 826.09ms. Allocated memory is still 130.0MB. Free memory was 96.3MB in the beginning and 69.9MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-11-12 22:20:50,552 INFO L158 Benchmark]: TraceAbstraction took 1008.97ms. Allocated memory is still 130.0MB. Free memory was 69.5MB in the beginning and 78.6MB in the end (delta: -9.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:20:50,552 INFO L158 Benchmark]: Witness Printer took 6.10ms. Allocated memory is still 130.0MB. Free memory is still 78.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:20:50,555 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 417.63ms. Allocated memory was 90.2MB in the beginning and 130.0MB in the end (delta: 39.8MB). Free memory was 53.0MB in the beginning and 100.9MB in the end (delta: -47.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.62ms. Allocated memory is still 130.0MB. Free memory was 100.9MB in the beginning and 98.4MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.42ms. Allocated memory is still 130.0MB. Free memory was 98.4MB in the beginning and 96.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 826.09ms. Allocated memory is still 130.0MB. Free memory was 96.3MB in the beginning and 69.9MB in the end (delta: 26.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 1008.97ms. Allocated memory is still 130.0MB. Free memory was 69.5MB in the beginning and 78.6MB in the end (delta: -9.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.10ms. Allocated memory is still 130.0MB. Free memory is still 78.6MB. 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: 245]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 244, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 135, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L236] float x = __VERIFIER_nondet_float(); [L237] float y = -1.0f / 0.0f; [L239] CALL isfinite_float(x) [L219] __int32_t ix; VAL [\old(x)=1000000000000000000000000000002, aT_atan={11:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, zero_atan2=0] [L221] ieee_float_shape_type gf_u; [L222] gf_u.value = (x) [L223] EXPR gf_u.word [L223] (ix) = gf_u.word [L225] ix &= 0x7fffffff [L226] return (((ix) < 0x7f800000L)); [L239] RET isfinite_float(x) [L239] COND TRUE isfinite_float(x) [L241] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; VAL [\old(x)=1000000000000000000000000000002, \old(y)=1000000000000000000000000000003, aT_atan={11:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000003, zero_atan2=0] [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, \old(y)=1000000000000000000000000000003, aT_atan={11:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, hx=-3, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000003, zero_atan2=0] [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, \old(y)=1000000000000000000000000000003, aT_atan={11:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, hx=-3, hy=-1, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000003, zero_atan2=0] [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; VAL [\old(x)=1000000000000000000000000000002, \old(y)=1000000000000000000000000000003, aT_atan={11:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, hx=-3, hy=-1, ix=2139095041, iy=2139095041, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000003, zero_atan2=0] [L241] RET, EXPR __ieee754_atan2f(y, x) [L241] float res = __ieee754_atan2f(y, x); [L244] COND TRUE res != -pi_o_2 VAL [aT_atan={11:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000003, zero_atan2=0] [L245] reach_error() VAL [aT_atan={11:0}, atanhi_atan={5:0}, atanlo_atan={7:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=1000000000000000000000000000003, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 58.56ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 86 SdHoareTripleChecker+Invalid, 30.82ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 86 mSDtfsCounter, 14 mSolverCounterSat, 1.80ms 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 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 [2021-11-12 22:20:50,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF --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 27ce6cfdcb9dfa0489011437b04a08db6e71d8edccf3dd91706f7dddce0310b4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:20:53,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:20:53,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:20:53,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:20:53,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:20:53,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:20:53,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:20:53,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:20:53,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:20:53,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:20:53,277 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:20:53,279 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:20:53,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:20:53,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:20:53,283 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:20:53,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:20:53,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:20:53,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:20:53,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:20:53,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:20:53,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:20:53,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:20:53,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:20:53,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:20:53,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:20:53,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:20:53,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:20:53,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:20:53,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:20:53,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:20:53,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:20:53,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:20:53,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:20:53,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:20:53,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:20:53,330 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:20:53,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:20:53,331 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:20:53,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:20:53,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:20:53,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:20:53,335 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 22:20:53,366 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:20:53,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:20:53,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:20:53,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:20:53,368 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:20:53,368 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:20:53,369 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:20:53,369 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:20:53,370 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:20:53,376 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:20:53,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:20:53,377 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 22:20:53,378 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 22:20:53,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:20:53,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:20:53,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:20:53,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:20:53,379 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:20:53,380 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:20:53,380 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:20:53,381 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 22:20:53,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:20:53,381 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:20:53,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:20:53,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:20:53,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:20:53,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:20:53,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:20:53,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:20:53,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:20:53,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:20:53,385 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:20:53,385 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:20:53,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:20:53,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:20:53,386 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:20:53,387 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_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27ce6cfdcb9dfa0489011437b04a08db6e71d8edccf3dd91706f7dddce0310b4 [2021-11-12 22:20:53,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:20:53,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:20:53,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:20:53,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:20:53,862 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:20:53,864 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2021-11-12 22:20:53,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/data/6ad719f33/210b90dfd1044de8a3a600e212d4f6c0/FLAG2dec77509 [2021-11-12 22:20:54,591 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:20:54,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c [2021-11-12 22:20:54,601 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/data/6ad719f33/210b90dfd1044de8a3a600e212d4f6c0/FLAG2dec77509 [2021-11-12 22:20:54,860 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/data/6ad719f33/210b90dfd1044de8a3a600e212d4f6c0 [2021-11-12 22:20:54,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:20:54,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:20:54,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:20:54,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:20:54,871 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:20:54,872 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:20:54" (1/1) ... [2021-11-12 22:20:54,873 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3599524d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:54, skipping insertion in model container [2021-11-12 22:20:54,874 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:20:54" (1/1) ... [2021-11-12 22:20:54,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:20:54,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:20:55,158 WARN L228 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_4f2af119-fa59-4bf2-bd81-4738687e1fec/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c[5556,5569] [2021-11-12 22:20:55,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:20:55,178 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:20:55,245 WARN L228 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_4f2af119-fa59-4bf2-bd81-4738687e1fec/sv-benchmarks/c/float-newlib/float_req_bl_0684b.c[5556,5569] [2021-11-12 22:20:55,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:20:55,273 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:20:55,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55 WrapperNode [2021-11-12 22:20:55,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:20:55,275 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:20:55,275 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:20:55,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:20:55,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (1/1) ... [2021-11-12 22:20:55,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (1/1) ... [2021-11-12 22:20:55,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:20:55,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:20:55,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:20:55,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:20:55,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (1/1) ... [2021-11-12 22:20:55,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (1/1) ... [2021-11-12 22:20:55,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (1/1) ... [2021-11-12 22:20:55,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (1/1) ... [2021-11-12 22:20:55,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (1/1) ... [2021-11-12 22:20:55,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (1/1) ... [2021-11-12 22:20:55,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (1/1) ... [2021-11-12 22:20:55,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:20:55,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:20:55,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:20:55,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:20:55,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (1/1) ... [2021-11-12 22:20:55,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:20:55,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:20:55,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:20:55,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:20:55,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-11-12 22:20:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:20:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:20:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-12 22:20:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-11-12 22:20:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-11-12 22:20:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 22:20:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:20:55,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:20:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-12 22:20:55,548 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2021-11-12 22:20:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2021-11-12 22:20:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 22:20:55,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:21:08,359 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:21:08,359 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-12 22:21:08,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:21:08 BoogieIcfgContainer [2021-11-12 22:21:08,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:21:08,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:21:08,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:21:08,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:21:08,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:20:54" (1/3) ... [2021-11-12 22:21:08,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac126ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:21:08, skipping insertion in model container [2021-11-12 22:21:08,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:20:55" (2/3) ... [2021-11-12 22:21:08,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac126ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:21:08, skipping insertion in model container [2021-11-12 22:21:08,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:21:08" (3/3) ... [2021-11-12 22:21:08,373 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0684b.c [2021-11-12 22:21:08,380 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:21:08,380 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:21:08,437 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:21:08,446 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:21:08,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:21:08,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 88 states have (on average 1.6477272727272727) internal successors, (145), 89 states have internal predecessors, (145), 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) [2021-11-12 22:21:08,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-12 22:21:08,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:08,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:08,480 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:21:08,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash -540288573, now seen corresponding path program 1 times [2021-11-12 22:21:08,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:08,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818357073] [2021-11-12 22:21:08,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:08,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:08,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:08,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:08,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:21:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:09,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:21:09,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:09,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:09,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:10,113 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:10,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818357073] [2021-11-12 22:21:10,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818357073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:10,115 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:10,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 22:21:10,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599810838] [2021-11-12 22:21:10,117 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:10,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:21:10,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:10,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:21:10,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:21:10,152 INFO L87 Difference]: Start difference. First operand has 96 states, 88 states have (on average 1.6477272727272727) internal successors, (145), 89 states have internal predecessors, (145), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:10,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:10,186 INFO L93 Difference]: Finished difference Result 190 states and 308 transitions. [2021-11-12 22:21:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:21:10,188 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2021-11-12 22:21:10,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:10,198 INFO L225 Difference]: With dead ends: 190 [2021-11-12 22:21:10,198 INFO L226 Difference]: Without dead ends: 92 [2021-11-12 22:21:10,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:21:10,206 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:10,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 2.11ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:21:10,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-12 22:21:10,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-12 22:21:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 85 states have internal predecessors, (123), 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) [2021-11-12 22:21:10,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 131 transitions. [2021-11-12 22:21:10,248 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 131 transitions. Word has length 14 [2021-11-12 22:21:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:10,248 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 131 transitions. [2021-11-12 22:21:10,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 131 transitions. [2021-11-12 22:21:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-12 22:21:10,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:10,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:10,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 22:21:10,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:10,450 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:21:10,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:10,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1209401097, now seen corresponding path program 1 times [2021-11-12 22:21:10,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:10,454 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65740433] [2021-11-12 22:21:10,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:10,455 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:10,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:10,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:10,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:21:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:11,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-12 22:21:11,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:11,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-12 22:21:13,439 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-12 22:21:13,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 42 [2021-11-12 22:21:14,305 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-12 22:21:14,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 26 [2021-11-12 22:21:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:15,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:20,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:20,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:20,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65740433] [2021-11-12 22:21:20,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65740433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:20,289 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:20,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-11-12 22:21:20,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710501717] [2021-11-12 22:21:20,289 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:20,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-12 22:21:20,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:20,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-12 22:21:20,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:21:20,293 INFO L87 Difference]: Start difference. First operand 92 states and 131 transitions. Second operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:20,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:20,360 INFO L93 Difference]: Finished difference Result 96 states and 134 transitions. [2021-11-12 22:21:20,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 22:21:20,360 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-12 22:21:20,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:20,363 INFO L225 Difference]: With dead ends: 96 [2021-11-12 22:21:20,363 INFO L226 Difference]: Without dead ends: 92 [2021-11-12 22:21:20,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2021-11-12 22:21:20,365 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 0 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.99ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:20,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1596 Invalid, 70 Unknown, 0 Unchecked, 29.68ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 70 Unchecked, 0.99ms Time] [2021-11-12 22:21:20,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-12 22:21:20,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-12 22:21:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 85 states have internal predecessors, (122), 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) [2021-11-12 22:21:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 130 transitions. [2021-11-12 22:21:20,398 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 130 transitions. Word has length 17 [2021-11-12 22:21:20,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:20,399 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 130 transitions. [2021-11-12 22:21:20,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.5) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 130 transitions. [2021-11-12 22:21:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 22:21:20,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:20,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:20,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:20,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:20,602 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:21:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1450439137, now seen corresponding path program 1 times [2021-11-12 22:21:20,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:20,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505463177] [2021-11-12 22:21:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:20,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:20,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:20,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:20,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:21:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:21,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:21:21,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:23,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:26,057 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:26,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505463177] [2021-11-12 22:21:26,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505463177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:26,057 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:26,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-12 22:21:26,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427552963] [2021-11-12 22:21:26,058 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:26,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:21:26,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:26,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:21:26,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:21:26,060 INFO L87 Difference]: Start difference. First operand 92 states and 130 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:33,433 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:21:36,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:21:37,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:21:39,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:21:41,956 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:21:44,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:21:47,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:21:48,905 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:21:49,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:49,126 INFO L93 Difference]: Finished difference Result 100 states and 138 transitions. [2021-11-12 22:21:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:21:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 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 22 [2021-11-12 22:21:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:49,130 INFO L225 Difference]: With dead ends: 100 [2021-11-12 22:21:49,131 INFO L226 Difference]: Without dead ends: 95 [2021-11-12 22:21:49,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:21:49,133 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 108 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21144.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21782.93ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:49,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 462 Invalid, 187 Unknown, 0 Unchecked, 4.62ms Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 6 Unknown, 0 Unchecked, 21782.93ms Time] [2021-11-12 22:21:49,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-12 22:21:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2021-11-12 22:21:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.423529411764706) internal successors, (121), 85 states have internal predecessors, (121), 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) [2021-11-12 22:21:49,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 129 transitions. [2021-11-12 22:21:49,150 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 129 transitions. Word has length 22 [2021-11-12 22:21:49,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:49,151 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 129 transitions. [2021-11-12 22:21:49,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 129 transitions. [2021-11-12 22:21:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 22:21:49,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:49,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:49,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-12 22:21:49,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:49,354 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:21:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:49,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1452286179, now seen corresponding path program 1 times [2021-11-12 22:21:49,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:49,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093706570] [2021-11-12 22:21:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:49,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:49,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:49,357 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:49,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:21:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:50,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:21:50,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:50,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:50,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:51,526 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:51,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093706570] [2021-11-12 22:21:51,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093706570] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:51,527 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:51,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:21:51,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320957120] [2021-11-12 22:21:51,528 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:51,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:21:51,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:51,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:21:51,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:21:51,529 INFO L87 Difference]: Start difference. First operand 92 states and 129 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:51,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:51,540 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2021-11-12 22:21:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:21:51,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 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 22 [2021-11-12 22:21:51,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:51,544 INFO L225 Difference]: With dead ends: 100 [2021-11-12 22:21:51,545 INFO L226 Difference]: Without dead ends: 94 [2021-11-12 22:21:51,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:21:51,551 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 61 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:51,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 699 Invalid, 8 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 8 Unchecked, 0.01ms Time] [2021-11-12 22:21:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-11-12 22:21:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2021-11-12 22:21:51,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 83 states have (on average 1.4216867469879517) internal successors, (118), 83 states have internal predecessors, (118), 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) [2021-11-12 22:21:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 126 transitions. [2021-11-12 22:21:51,568 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 126 transitions. Word has length 22 [2021-11-12 22:21:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:51,569 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 126 transitions. [2021-11-12 22:21:51,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:51,569 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 126 transitions. [2021-11-12 22:21:51,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-12 22:21:51,570 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:51,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:51,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:51,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:51,770 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:21:51,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:51,771 INFO L85 PathProgramCache]: Analyzing trace with hash -947623069, now seen corresponding path program 1 times [2021-11-12 22:21:51,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:51,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903027516] [2021-11-12 22:21:51,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:51,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:51,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:51,773 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:51,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:21:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:52,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:21:52,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:53,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:54,321 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:54,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903027516] [2021-11-12 22:21:54,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903027516] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:54,321 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:54,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 22:21:54,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911051450] [2021-11-12 22:21:54,322 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:54,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:21:54,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:54,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:21:54,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:21:54,323 INFO L87 Difference]: Start difference. First operand 90 states and 126 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:21:54,385 INFO L93 Difference]: Finished difference Result 177 states and 250 transitions. [2021-11-12 22:21:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 22:21:54,386 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 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 22 [2021-11-12 22:21:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:21:54,388 INFO L225 Difference]: With dead ends: 177 [2021-11-12 22:21:54,388 INFO L226 Difference]: Without dead ends: 105 [2021-11-12 22:21:54,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:21:54,390 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 38 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 47.17ms IncrementalHoareTripleChecker+Time [2021-11-12 22:21:54,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 911 Invalid, 30 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 22 Unchecked, 47.17ms Time] [2021-11-12 22:21:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-12 22:21:54,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 84. [2021-11-12 22:21:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 77 states have (on average 1.3896103896103895) internal successors, (107), 77 states have internal predecessors, (107), 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) [2021-11-12 22:21:54,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 115 transitions. [2021-11-12 22:21:54,402 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 115 transitions. Word has length 22 [2021-11-12 22:21:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:21:54,403 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 115 transitions. [2021-11-12 22:21:54,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:21:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 115 transitions. [2021-11-12 22:21:54,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-12 22:21:54,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:21:54,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:21:54,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:21:54,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:21:54,627 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:21:54,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:21:54,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1672952196, now seen corresponding path program 1 times [2021-11-12 22:21:54,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:21:54,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462683900] [2021-11-12 22:21:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:21:54,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:21:54,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:21:54,631 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:21:54,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:21:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:21:55,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:21:55,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:21:55,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-11-12 22:21:56,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 37 treesize of output 21 [2021-11-12 22:21:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:57,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:21:59,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:21:59,755 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:21:59,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462683900] [2021-11-12 22:21:59,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462683900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:21:59,756 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:21:59,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-12 22:21:59,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169962809] [2021-11-12 22:21:59,756 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:21:59,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-12 22:21:59,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:21:59,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-12 22:21:59,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:21:59,757 INFO L87 Difference]: Start difference. First operand 84 states and 115 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:00,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:00,032 INFO L93 Difference]: Finished difference Result 137 states and 187 transitions. [2021-11-12 22:22:00,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-12 22:22:00,033 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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 [2021-11-12 22:22:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:00,034 INFO L225 Difference]: With dead ends: 137 [2021-11-12 22:22:00,035 INFO L226 Difference]: Without dead ends: 73 [2021-11-12 22:22:00,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:22:00,036 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 4 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 68.45ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:00,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 880 Invalid, 46 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 40 Unchecked, 68.45ms Time] [2021-11-12 22:22:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-12 22:22:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-11-12 22:22:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.303030303030303) internal successors, (86), 66 states have internal predecessors, (86), 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) [2021-11-12 22:22:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2021-11-12 22:22:00,046 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 94 transitions. Word has length 23 [2021-11-12 22:22:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:00,046 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-11-12 22:22:00,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 94 transitions. [2021-11-12 22:22:00,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:22:00,048 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:00,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:00,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:00,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:00,267 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:22:00,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:00,267 INFO L85 PathProgramCache]: Analyzing trace with hash 791814228, now seen corresponding path program 1 times [2021-11-12 22:22:00,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:00,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [13119536] [2021-11-12 22:22:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:00,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:00,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:00,273 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:00,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:22:01,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:01,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:22:01,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:02,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:05,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:22:05,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [13119536] [2021-11-12 22:22:05,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [13119536] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:22:05,377 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:22:05,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-12 22:22:05,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436055637] [2021-11-12 22:22:05,377 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:22:05,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:22:05,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:22:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:22:05,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:22:05,379 INFO L87 Difference]: Start difference. First operand 73 states and 94 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:08,962 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:22:12,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:22:15,445 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:22:17,514 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:22:20,366 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:22:24,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:22:25,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-12 22:22:26,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:26,014 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2021-11-12 22:22:26,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:22:26,015 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 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 24 [2021-11-12 22:22:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:26,016 INFO L225 Difference]: With dead ends: 81 [2021-11-12 22:22:26,016 INFO L226 Difference]: Without dead ends: 76 [2021-11-12 22:22:26,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:22:26,018 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 130 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 12 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18514.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19100.56ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:26,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 268 Invalid, 116 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [12 Valid, 100 Invalid, 4 Unknown, 0 Unchecked, 19100.56ms Time] [2021-11-12 22:22:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-12 22:22:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2021-11-12 22:22:26,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 66 states have internal predecessors, (85), 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) [2021-11-12 22:22:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2021-11-12 22:22:26,038 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 24 [2021-11-12 22:22:26,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:26,041 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2021-11-12 22:22:26,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 9 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:26,041 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2021-11-12 22:22:26,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-12 22:22:26,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:26,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:26,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:26,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:26,265 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:22:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash 793661270, now seen corresponding path program 1 times [2021-11-12 22:22:26,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:26,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645887018] [2021-11-12 22:22:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:26,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:26,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:26,269 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:26,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:22:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:27,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:22:27,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:27,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:28,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:22:28,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645887018] [2021-11-12 22:22:28,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645887018] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:22:28,454 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:22:28,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-12 22:22:28,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012567540] [2021-11-12 22:22:28,455 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:22:28,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 22:22:28,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:22:28,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 22:22:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:22:28,456 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:28,464 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2021-11-12 22:22:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:22:28,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 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 24 [2021-11-12 22:22:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:28,465 INFO L225 Difference]: With dead ends: 92 [2021-11-12 22:22:28,465 INFO L226 Difference]: Without dead ends: 86 [2021-11-12 22:22:28,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-12 22:22:28,467 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 48 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.93ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.01ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:28,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 326 Invalid, 6 Unknown, 0 Unchecked, 0.93ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 6 Unchecked, 0.01ms Time] [2021-11-12 22:22:28,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-12 22:22:28,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 71. [2021-11-12 22:22:28,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 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) [2021-11-12 22:22:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 90 transitions. [2021-11-12 22:22:28,495 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 90 transitions. Word has length 24 [2021-11-12 22:22:28,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:28,496 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 90 transitions. [2021-11-12 22:22:28,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:28,496 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 90 transitions. [2021-11-12 22:22:28,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-12 22:22:28,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:28,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:28,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:28,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:28,707 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:22:28,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:28,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1553945203, now seen corresponding path program 1 times [2021-11-12 22:22:28,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:28,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672638021] [2021-11-12 22:22:28,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:28,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:28,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:28,709 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:28,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:22:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:29,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:22:29,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:30,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:31,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:31,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:22:31,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672638021] [2021-11-12 22:22:31,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672638021] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:22:31,298 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:22:31,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-12 22:22:31,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038975895] [2021-11-12 22:22:31,298 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:22:31,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-12 22:22:31,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:22:31,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-12 22:22:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:22:31,300 INFO L87 Difference]: Start difference. First operand 71 states and 90 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:31,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:22:31,376 INFO L93 Difference]: Finished difference Result 105 states and 133 transitions. [2021-11-12 22:22:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:22:31,376 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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 25 [2021-11-12 22:22:31,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:22:31,377 INFO L225 Difference]: With dead ends: 105 [2021-11-12 22:22:31,377 INFO L226 Difference]: Without dead ends: 51 [2021-11-12 22:22:31,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:22:31,379 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 1 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 29.19ms IncrementalHoareTripleChecker+Time [2021-11-12 22:22:31,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 340 Invalid, 15 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 10 Unchecked, 29.19ms Time] [2021-11-12 22:22:31,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-12 22:22:31,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-12 22:22:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2391304347826086) internal successors, (57), 46 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-12 22:22:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2021-11-12 22:22:31,385 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 25 [2021-11-12 22:22:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:22:31,385 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2021-11-12 22:22:31,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 22:22:31,386 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2021-11-12 22:22:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-12 22:22:31,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:22:31,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:31,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:31,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:31,608 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:22:31,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:22:31,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1512113405, now seen corresponding path program 1 times [2021-11-12 22:22:31,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:22:31,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552349922] [2021-11-12 22:22:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:31,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:22:31,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:22:31,610 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:22:31,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:22:32,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:32,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:22:32,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:33,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:34,275 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:22:34,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552349922] [2021-11-12 22:22:34,276 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [atan_float_~hx~0] [2021-11-12 22:22:34,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1402057193] [2021-11-12 22:22:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:34,276 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 22:22:34,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 22:22:34,278 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 22:22:34,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 22:22:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:36,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:22:36,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:37,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:37,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [atan_float_~hx~0] [2021-11-12 22:22:37,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509336367] [2021-11-12 22:22:37,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:22:37,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:22:37,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:22:37,951 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:22:37,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-12 22:22:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:22:38,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-12 22:22:38,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:22:38,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:22:38,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:22:39,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Shadow problem: [atan_float_~hx~0] [2021-11-12 22:22:39,767 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:22:39,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-12 22:22:39,767 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-12 22:22:39,767 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-12 22:22:39,773 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 22:22:39,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:22:40,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-12 22:22:40,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-12 22:22:40,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:22:40,384 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:22:40,386 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:22:40,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:22:40 BoogieIcfgContainer [2021-11-12 22:22:40,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:22:40,404 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:22:40,405 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:22:40,405 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:22:40,405 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:21:08" (3/4) ... [2021-11-12 22:22:40,408 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 22:22:40,408 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:22:40,409 INFO L158 Benchmark]: Toolchain (without parser) took 105545.05ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 46.2MB in the beginning and 46.8MB in the end (delta: -624.2kB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2021-11-12 22:22:40,409 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:22:40,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.89ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 41.2MB in the end (delta: 4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:22:40,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 101.68ms. Allocated memory is still 65.0MB. Free memory was 41.0MB in the beginning and 38.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 22:22:40,410 INFO L158 Benchmark]: Boogie Preprocessor took 81.63ms. Allocated memory is still 65.0MB. Free memory was 38.6MB in the beginning and 36.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:22:40,411 INFO L158 Benchmark]: RCFGBuilder took 12903.22ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 35.8MB in the beginning and 46.5MB in the end (delta: -10.6MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2021-11-12 22:22:40,411 INFO L158 Benchmark]: TraceAbstraction took 92039.19ms. Allocated memory is still 83.9MB. Free memory was 45.8MB in the beginning and 46.8MB in the end (delta: -1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:22:40,412 INFO L158 Benchmark]: Witness Printer took 3.75ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 46.8MB in the end (delta: 22.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:22:40,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 65.0MB. Free memory was 46.4MB in the beginning and 46.3MB in the end (delta: 95.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.89ms. Allocated memory is still 65.0MB. Free memory was 46.0MB in the beginning and 41.2MB in the end (delta: 4.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 101.68ms. Allocated memory is still 65.0MB. Free memory was 41.0MB in the beginning and 38.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.63ms. Allocated memory is still 65.0MB. Free memory was 38.6MB in the beginning and 36.1MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 12903.22ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 35.8MB in the beginning and 46.5MB in the end (delta: -10.6MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * TraceAbstraction took 92039.19ms. Allocated memory is still 83.9MB. Free memory was 45.8MB in the beginning and 46.8MB in the end (delta: -1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.75ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 46.8MB in the end (delta: 22.0kB). 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: 245]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L236] float x = __VERIFIER_nondet_float(); [L237] float y = -1.0f / 0.0f; [L239] CALL isfinite_float(x) [L219] __int32_t ix; [L221] ieee_float_shape_type gf_u; [L222] gf_u.value = (x) [L223] EXPR gf_u.word [L223] (ix) = gf_u.word [L225] ix &= 0x7fffffff [L226] return (((ix) < 0x7f800000L)); [L239] RET isfinite_float(x) [L239] COND TRUE isfinite_float(x) [L241] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff [L136] COND FALSE !(((ix) > 0x7f800000L) || ((iy) > 0x7f800000L)) [L138] COND TRUE hx == 0x3f800000 [L139] CALL, EXPR atan_float(y) [L54] float w, s1, s2, z; [L55] __int32_t ix, hx, id; [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (hx) = gf_u.word [L62] ix = hx & 0x7fffffff [L63] COND TRUE ix >= 0x50800000 [L64] COND TRUE ((ix) > 0x7f800000L) [L65] return x + x; [L139] RET, EXPR atan_float(y) [L139] return atan_float(y); [L241] RET, EXPR __ieee754_atan2f(y, x) [L241] float res = __ieee754_atan2f(y, x); [L244] COND TRUE res != -pi_o_2 [L245] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 92.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 44.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 399 SdHoareTripleChecker+Valid, 41029.31ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 390 mSDsluCounter, 5618 SdHoareTripleChecker+Invalid, 39798.85ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 156 IncrementalHoareTripleChecker+Unchecked, 4700 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 297 IncrementalHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 918 mSDtfsCounter, 297 mSolverCounterSat, 48.66ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 376 GetRequests, 292 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 14.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=0, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 46 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 8.8s SatisfiabilityAnalysisTime, 29.9s InterpolantComputationTime, 221 NumberOfCodeBlocks, 221 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 395 ConstructedInterpolants, 161 QuantifiedInterpolants, 4603 SizeOfPredicates, 75 NumberOfNonLiveVariables, 1312 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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 [2021-11-12 22:22:40,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f2af119-fa59-4bf2-bd81-4738687e1fec/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN