./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 032bdbaadc57a40b0ab079d12fe59c315df9e45b2b10a57560568a476c18d976 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:57:50,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:57:50,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:57:50,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:57:50,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:57:50,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:57:50,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:57:50,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:57:50,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:57:50,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:57:50,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:57:50,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:57:50,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:57:50,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:57:50,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:57:50,872 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:57:50,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:57:50,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:57:50,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:57:50,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:57:50,878 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:57:50,879 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:57:50,880 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:57:50,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:57:50,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:57:50,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:57:50,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:57:50,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:57:50,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:57:50,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:57:50,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:57:50,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:57:50,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:57:50,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:57:50,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:57:50,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:57:50,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:57:50,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:57:50,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:57:50,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:57:50,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:57:50,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:57:50,924 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:57:50,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:57:50,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:57:50,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:57:50,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:57:50,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:57:50,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:57:50,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:57:50,925 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:57:50,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:57:50,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:57:50,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:57:50,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:57:50,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:57:50,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:57:50,926 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:57:50,926 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:57:50,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:57:50,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:57:50,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:57:50,927 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:57:50,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:57:50,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:57:50,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:57:50,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:57:50,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:57:50,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:57:50,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:57:50,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:57:50,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:57:50,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:57:50,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:57:50,928 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:57:50,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:57:50,928 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:57:50,928 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 032bdbaadc57a40b0ab079d12fe59c315df9e45b2b10a57560568a476c18d976 [2022-12-13 13:57:51,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:57:51,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:57:51,113 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:57:51,114 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:57:51,114 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:57:51,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c [2022-12-13 13:57:53,644 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:57:53,780 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:57:53,780 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c [2022-12-13 13:57:53,786 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/data/1820a76de/87f00a8bd5d64e41951d4bf0551e347d/FLAGeefaeb37e [2022-12-13 13:57:53,795 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/data/1820a76de/87f00a8bd5d64e41951d4bf0551e347d [2022-12-13 13:57:53,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:57:53,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:57:53,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:57:53,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:57:53,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:57:53,802 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:57:53" (1/1) ... [2022-12-13 13:57:53,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c377960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:53, skipping insertion in model container [2022-12-13 13:57:53,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:57:53" (1/1) ... [2022-12-13 13:57:53,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:57:53,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:57:53,934 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c[1995,2008] [2022-12-13 13:57:53,939 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c[2364,2377] [2022-12-13 13:57:53,977 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:57:53,984 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:57:53,996 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c[1995,2008] [2022-12-13 13:57:53,997 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c[2364,2377] [2022-12-13 13:57:54,016 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:57:54,026 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:57:54,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54 WrapperNode [2022-12-13 13:57:54,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:57:54,027 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:57:54,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:57:54,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:57:54,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,063 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 187 [2022-12-13 13:57:54,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:57:54,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:57:54,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:57:54,064 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:57:54,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,083 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:57:54,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:57:54,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:57:54,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:57:54,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (1/1) ... [2022-12-13 13:57:54,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:57:54,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:54,116 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:57:54,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:57:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:57:54,151 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-13 13:57:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-13 13:57:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:57:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:57:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:57:54,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 13:57:54,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 13:57:54,226 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:57:54,227 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:57:54,590 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:57:54,597 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:57:54,598 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 13:57:54,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:57:54 BoogieIcfgContainer [2022-12-13 13:57:54,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:57:54,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:57:54,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:57:54,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:57:54,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:57:53" (1/3) ... [2022-12-13 13:57:54,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157ea0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:57:54, skipping insertion in model container [2022-12-13 13:57:54,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:54" (2/3) ... [2022-12-13 13:57:54,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157ea0b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:57:54, skipping insertion in model container [2022-12-13 13:57:54,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:57:54" (3/3) ... [2022-12-13 13:57:54,610 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_2a.c.cil.c [2022-12-13 13:57:54,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:57:54,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 13:57:54,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:57:54,675 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78cbb23e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:57:54,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 13:57:54,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 74 states have (on average 1.5945945945945945) internal successors, (118), 77 states have internal predecessors, (118), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 13:57:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 13:57:54,685 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:57:54,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:57:54,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:57:54,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:57:54,692 INFO L85 PathProgramCache]: Analyzing trace with hash -929888677, now seen corresponding path program 1 times [2022-12-13 13:57:54,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:57:54,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210436765] [2022-12-13 13:57:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:57:54,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:57:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:57:54,779 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 13:57:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 13:57:54,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 13:57:54,803 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 13:57:54,804 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-13 13:57:54,805 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-13 13:57:54,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:57:54,810 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-13 13:57:54,813 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 13:57:54,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 01:57:54 BoogieIcfgContainer [2022-12-13 13:57:54,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 13:57:54,828 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 13:57:54,829 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 13:57:54,829 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 13:57:54,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:57:54" (3/4) ... [2022-12-13 13:57:54,832 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 13:57:54,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 13:57:54,833 INFO L158 Benchmark]: Toolchain (without parser) took 1034.92ms. Allocated memory is still 144.7MB. Free memory was 103.0MB in the beginning and 49.0MB in the end (delta: 54.0MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-12-13 13:57:54,833 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 144.7MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:57:54,834 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.08ms. Allocated memory is still 144.7MB. Free memory was 103.0MB in the beginning and 88.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 13:57:54,834 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.99ms. Allocated memory is still 144.7MB. Free memory was 88.4MB in the beginning and 86.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:57:54,835 INFO L158 Benchmark]: Boogie Preprocessor took 23.22ms. Allocated memory is still 144.7MB. Free memory was 86.3MB in the beginning and 84.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:57:54,835 INFO L158 Benchmark]: RCFGBuilder took 512.38ms. Allocated memory is still 144.7MB. Free memory was 84.7MB in the beginning and 63.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 13:57:54,836 INFO L158 Benchmark]: TraceAbstraction took 225.60ms. Allocated memory is still 144.7MB. Free memory was 63.2MB in the beginning and 49.5MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 13:57:54,836 INFO L158 Benchmark]: Witness Printer took 3.87ms. Allocated memory is still 144.7MB. Free memory was 49.5MB in the beginning and 49.0MB in the end (delta: 492.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:57:54,838 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 144.7MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.08ms. Allocated memory is still 144.7MB. Free memory was 103.0MB in the beginning and 88.4MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.99ms. Allocated memory is still 144.7MB. Free memory was 88.4MB in the beginning and 86.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.22ms. Allocated memory is still 144.7MB. Free memory was 86.3MB in the beginning and 84.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 512.38ms. Allocated memory is still 144.7MB. Free memory was 84.7MB in the beginning and 63.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 225.60ms. Allocated memory is still 144.7MB. Free memory was 63.2MB in the beginning and 49.5MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 3.87ms. Allocated memory is still 144.7MB. Free memory was 49.5MB in the beginning and 49.0MB in the end (delta: 492.4kB). 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: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.4f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 84 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 13:57:54,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8 --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 032bdbaadc57a40b0ab079d12fe59c315df9e45b2b10a57560568a476c18d976 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 13:57:56,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:57:56,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:57:56,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:57:56,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:57:56,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:57:56,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:57:56,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:57:56,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:57:56,484 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:57:56,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:57:56,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:57:56,486 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:57:56,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:57:56,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:57:56,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:57:56,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:57:56,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:57:56,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:57:56,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:57:56,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:57:56,496 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:57:56,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:57:56,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:57:56,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:57:56,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:57:56,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:57:56,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:57:56,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:57:56,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:57:56,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:57:56,504 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:57:56,505 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:57:56,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:57:56,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:57:56,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:57:56,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:57:56,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:57:56,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:57:56,508 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:57:56,509 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:57:56,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 13:57:56,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:57:56,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:57:56,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:57:56,524 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:57:56,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:57:56,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:57:56,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:57:56,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:57:56,525 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:57:56,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:57:56,525 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:57:56,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:57:56,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:57:56,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:57:56,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:57:56,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:57:56,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:57:56,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 13:57:56,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 13:57:56,527 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:57:56,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:57:56,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:57:56,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:57:56,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:57:56,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:57:56,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:57:56,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:57:56,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:57:56,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:57:56,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:57:56,528 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 13:57:56,528 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 13:57:56,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:57:56,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:57:56,529 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:57:56,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:57:56,529 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 13:57:56,529 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:57:56,529 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 032bdbaadc57a40b0ab079d12fe59c315df9e45b2b10a57560568a476c18d976 [2022-12-13 13:57:56,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:57:56,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:57:56,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:57:56,762 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:57:56,762 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:57:56,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c [2022-12-13 13:57:59,352 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:57:59,504 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:57:59,504 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c [2022-12-13 13:57:59,514 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/data/d6d4b973f/218548ae107e4666b482d3cbe4985da2/FLAGad3b9b10e [2022-12-13 13:57:59,528 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/data/d6d4b973f/218548ae107e4666b482d3cbe4985da2 [2022-12-13 13:57:59,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:57:59,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:57:59,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:57:59,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:57:59,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:57:59,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d322ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59, skipping insertion in model container [2022-12-13 13:57:59,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:57:59,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:57:59,736 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c[1995,2008] [2022-12-13 13:57:59,742 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c[2364,2377] [2022-12-13 13:57:59,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:57:59,791 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:57:59,807 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c[1995,2008] [2022-12-13 13:57:59,809 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/sv-benchmarks/c/combinations/square_7+soft_float_2a.c.cil.c[2364,2377] [2022-12-13 13:57:59,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:57:59,856 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:57:59,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59 WrapperNode [2022-12-13 13:57:59,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:57:59,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:57:59,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:57:59,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:57:59,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,900 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2022-12-13 13:57:59,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:57:59,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:57:59,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:57:59,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:57:59,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,929 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:57:59,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:57:59,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:57:59,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:57:59,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (1/1) ... [2022-12-13 13:57:59,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:57:59,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:57:59,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:57:59,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:57:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:57:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 13:57:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-12-13 13:57:59,996 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-12-13 13:57:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:57:59,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:57:59,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 13:57:59,996 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 13:58:00,060 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:58:00,062 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:58:02,538 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:58:02,544 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:58:02,544 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 13:58:02,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:58:02 BoogieIcfgContainer [2022-12-13 13:58:02,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:58:02,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:58:02,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:58:02,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:58:02,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:57:59" (1/3) ... [2022-12-13 13:58:02,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65136336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:58:02, skipping insertion in model container [2022-12-13 13:58:02,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:57:59" (2/3) ... [2022-12-13 13:58:02,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65136336 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:58:02, skipping insertion in model container [2022-12-13 13:58:02,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:58:02" (3/3) ... [2022-12-13 13:58:02,554 INFO L112 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_2a.c.cil.c [2022-12-13 13:58:02,569 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:58:02,569 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 13:58:02,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:58:02,608 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@24f424ed, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:58:02,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 13:58:02,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 13:58:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 13:58:02,616 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:02,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:02,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:02,621 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-12-13 13:58:02,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:02,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476060101] [2022-12-13 13:58:02,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:02,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:02,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:02,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:02,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 13:58:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:58:03,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 13:58:03,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:58:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:58:03,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:58:03,113 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:58:03,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476060101] [2022-12-13 13:58:03,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476060101] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:58:03,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:58:03,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:58:03,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814309004] [2022-12-13 13:58:03,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:58:03,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:58:03,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:58:03,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:58:03,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:58:03,140 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:03,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:58:03,159 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2022-12-13 13:58:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:58:03,160 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2022-12-13 13:58:03,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:58:03,166 INFO L225 Difference]: With dead ends: 117 [2022-12-13 13:58:03,166 INFO L226 Difference]: Without dead ends: 52 [2022-12-13 13:58:03,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:58:03,171 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:58:03,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:58:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-13 13:58:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-12-13 13:58:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 13:58:03,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2022-12-13 13:58:03,199 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2022-12-13 13:58:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:58:03,200 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2022-12-13 13:58:03,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:58:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2022-12-13 13:58:03,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-13 13:58:03,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:58:03,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:58:03,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:58:03,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:03,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:58:03,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:58:03,404 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-12-13 13:58:03,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:58:03,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376369336] [2022-12-13 13:58:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:58:03,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:58:03,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:58:03,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:58:03,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 14:01:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:01:13,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:01:13,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:01:28,861 WARN L837 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-12-13 14:02:02,600 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2022-12-13 14:02:04,656 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2022-12-13 14:02:04,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:02:04,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:02:04,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:04,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376369336] [2022-12-13 14:02:04,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376369336] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:04,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:04,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:02:04,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989745260] [2022-12-13 14:02:04,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:04,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:02:04,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:04,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:02:04,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2022-12-13 14:02:04,660 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:07,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:02:09,280 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse0)) (.cse2 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) .cse1 (or (and (or (not .cse1) (not .cse2)) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (and .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse2)) .cse2 (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-12-13 14:02:09,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:09,423 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2022-12-13 14:02:09,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:02:09,424 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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 7 [2022-12-13 14:02:09,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:09,426 INFO L225 Difference]: With dead ends: 52 [2022-12-13 14:02:09,426 INFO L226 Difference]: Without dead ends: 47 [2022-12-13 14:02:09,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=20, Invalid=18, Unknown=4, NotChecked=30, Total=72 [2022-12-13 14:02:09,428 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 68 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:09,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 178 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 1 Unknown, 138 Unchecked, 2.4s Time] [2022-12-13 14:02:09,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-13 14:02:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-12-13 14:02:09,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 14:02:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2022-12-13 14:02:09,437 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 7 [2022-12-13 14:02:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:09,438 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2022-12-13 14:02:09,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:02:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2022-12-13 14:02:09,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 14:02:09,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:09,440 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:09,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 14:02:09,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:09,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:09,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1370969986, now seen corresponding path program 1 times [2022-12-13 14:02:09,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:09,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102246544] [2022-12-13 14:02:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:09,648 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:09,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:09,649 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:09,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 14:02:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:09,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:02:09,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:09,850 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:02:09,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:02:09,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:09,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102246544] [2022-12-13 14:02:09,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102246544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:09,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:09,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:02:09,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535471892] [2022-12-13 14:02:09,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:09,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:02:09,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:02:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:02:09,854 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:02:10,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:10,198 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2022-12-13 14:02:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:02:10,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2022-12-13 14:02:10,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:10,201 INFO L225 Difference]: With dead ends: 104 [2022-12-13 14:02:10,201 INFO L226 Difference]: Without dead ends: 61 [2022-12-13 14:02:10,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:02:10,203 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 16 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:10,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 146 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:02:10,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-13 14:02:10,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2022-12-13 14:02:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 14:02:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2022-12-13 14:02:10,213 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 43 [2022-12-13 14:02:10,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:10,214 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2022-12-13 14:02:10,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:02:10,214 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2022-12-13 14:02:10,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 14:02:10,215 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:10,216 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:10,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 14:02:10,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:10,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:10,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:10,420 INFO L85 PathProgramCache]: Analyzing trace with hash -14997806, now seen corresponding path program 1 times [2022-12-13 14:02:10,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:10,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362728652] [2022-12-13 14:02:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:10,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:10,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:10,426 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:10,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 14:02:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:10,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:02:10,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:02:10,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:02:10,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:10,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362728652] [2022-12-13 14:02:10,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362728652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:10,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:10,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:02:10,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420784359] [2022-12-13 14:02:10,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:10,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:02:10,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:10,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:02:10,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:02:10,662 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:02:10,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:10,950 INFO L93 Difference]: Finished difference Result 108 states and 153 transitions. [2022-12-13 14:02:10,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:02:10,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-12-13 14:02:10,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:10,952 INFO L225 Difference]: With dead ends: 108 [2022-12-13 14:02:10,952 INFO L226 Difference]: Without dead ends: 64 [2022-12-13 14:02:10,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:02:10,954 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 10 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:10,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 160 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:02:10,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-12-13 14:02:10,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-12-13 14:02:10,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.375) internal successors, (66), 49 states have internal predecessors, (66), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 14:02:10,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2022-12-13 14:02:10,961 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 46 [2022-12-13 14:02:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:10,962 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-12-13 14:02:10,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:02:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2022-12-13 14:02:10,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 14:02:10,963 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:10,963 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:10,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 14:02:11,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:11,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:11,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1638472845, now seen corresponding path program 1 times [2022-12-13 14:02:11,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:11,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468214841] [2022-12-13 14:02:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:11,166 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:11,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:11,168 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:11,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 14:02:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:11,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:02:11,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:11,422 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:02:11,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:02:11,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:11,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468214841] [2022-12-13 14:02:11,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468214841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:11,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:11,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:02:11,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891402612] [2022-12-13 14:02:11,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:11,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:02:11,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:11,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:02:11,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:02:11,426 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:02:11,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:11,827 INFO L93 Difference]: Finished difference Result 117 states and 165 transitions. [2022-12-13 14:02:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:02:11,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2022-12-13 14:02:11,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:11,830 INFO L225 Difference]: With dead ends: 117 [2022-12-13 14:02:11,830 INFO L226 Difference]: Without dead ends: 68 [2022-12-13 14:02:11,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:02:11,832 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 17 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:11,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 153 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:02:11,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-13 14:02:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2022-12-13 14:02:11,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 50 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 14:02:11,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 80 transitions. [2022-12-13 14:02:11,844 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 80 transitions. Word has length 47 [2022-12-13 14:02:11,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:11,845 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 80 transitions. [2022-12-13 14:02:11,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:02:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 80 transitions. [2022-12-13 14:02:11,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 14:02:11,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:11,847 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:11,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 14:02:12,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:12,049 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:12,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:12,051 INFO L85 PathProgramCache]: Analyzing trace with hash 388661875, now seen corresponding path program 1 times [2022-12-13 14:02:12,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:12,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111774256] [2022-12-13 14:02:12,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:12,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:12,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:12,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:12,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 14:02:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:12,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:02:12,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:12,338 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:02:12,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:02:12,339 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:12,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111774256] [2022-12-13 14:02:12,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111774256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:12,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:12,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:02:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883986730] [2022-12-13 14:02:12,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:12,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:02:12,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:12,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:02:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:02:12,341 INFO L87 Difference]: Start difference. First operand 58 states and 80 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:02:12,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:12,925 INFO L93 Difference]: Finished difference Result 125 states and 176 transitions. [2022-12-13 14:02:12,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:02:12,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2022-12-13 14:02:12,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:12,928 INFO L225 Difference]: With dead ends: 125 [2022-12-13 14:02:12,928 INFO L226 Difference]: Without dead ends: 75 [2022-12-13 14:02:12,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:02:12,929 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 19 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:12,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 202 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 14:02:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-13 14:02:12,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2022-12-13 14:02:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.38) internal successors, (69), 51 states have internal predecessors, (69), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 14:02:12,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 82 transitions. [2022-12-13 14:02:12,937 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 82 transitions. Word has length 48 [2022-12-13 14:02:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:12,938 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 82 transitions. [2022-12-13 14:02:12,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:02:12,938 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 82 transitions. [2022-12-13 14:02:12,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 14:02:12,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:12,941 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:12,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 14:02:13,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:13,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:13,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:13,144 INFO L85 PathProgramCache]: Analyzing trace with hash 933318672, now seen corresponding path program 1 times [2022-12-13 14:02:13,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:13,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910467816] [2022-12-13 14:02:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:13,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:13,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:13,150 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:13,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 14:02:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:13,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:02:13,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:02:13,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:02:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:02:14,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:14,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910467816] [2022-12-13 14:02:14,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910467816] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:02:14,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:02:14,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 14:02:14,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915885759] [2022-12-13 14:02:14,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:02:14,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:02:14,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:14,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:02:14,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:02:14,061 INFO L87 Difference]: Start difference. First operand 59 states and 82 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:02:14,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:14,823 INFO L93 Difference]: Finished difference Result 146 states and 208 transitions. [2022-12-13 14:02:14,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:02:14,824 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2022-12-13 14:02:14,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:14,825 INFO L225 Difference]: With dead ends: 146 [2022-12-13 14:02:14,825 INFO L226 Difference]: Without dead ends: 95 [2022-12-13 14:02:14,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:02:14,827 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 53 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:14,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 210 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 14:02:14,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-12-13 14:02:14,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 67. [2022-12-13 14:02:14,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 59 states have internal predecessors, (82), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 14:02:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 95 transitions. [2022-12-13 14:02:14,838 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 95 transitions. Word has length 49 [2022-12-13 14:02:14,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:14,838 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 95 transitions. [2022-12-13 14:02:14,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:02:14,838 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 95 transitions. [2022-12-13 14:02:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 14:02:14,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:14,839 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:14,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 14:02:15,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:15,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:15,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:15,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1187730481, now seen corresponding path program 1 times [2022-12-13 14:02:15,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:15,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225672276] [2022-12-13 14:02:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:15,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:15,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:15,047 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:15,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 14:02:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:15,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:02:15,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:02:15,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:02:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:02:16,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:16,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225672276] [2022-12-13 14:02:16,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225672276] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:02:16,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:02:16,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 14:02:16,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707730779] [2022-12-13 14:02:16,097 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:02:16,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:02:16,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:16,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:02:16,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:02:16,099 INFO L87 Difference]: Start difference. First operand 67 states and 95 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:02:17,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:17,610 INFO L93 Difference]: Finished difference Result 164 states and 236 transitions. [2022-12-13 14:02:17,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:02:17,611 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 51 [2022-12-13 14:02:17,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:17,612 INFO L225 Difference]: With dead ends: 164 [2022-12-13 14:02:17,612 INFO L226 Difference]: Without dead ends: 105 [2022-12-13 14:02:17,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:02:17,614 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 109 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:17,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 294 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 14:02:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-12-13 14:02:17,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 71. [2022-12-13 14:02:17,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.435483870967742) internal successors, (89), 63 states have internal predecessors, (89), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 14:02:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 102 transitions. [2022-12-13 14:02:17,626 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 102 transitions. Word has length 51 [2022-12-13 14:02:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:17,626 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 102 transitions. [2022-12-13 14:02:17,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:02:17,626 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 102 transitions. [2022-12-13 14:02:17,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 14:02:17,627 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:17,628 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:17,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 14:02:17,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:17,829 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:17,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:17,831 INFO L85 PathProgramCache]: Analyzing trace with hash -763243182, now seen corresponding path program 2 times [2022-12-13 14:02:17,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:17,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640617453] [2022-12-13 14:02:17,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:02:17,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:17,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:17,836 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:17,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 14:02:17,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 14:02:17,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:02:17,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:02:17,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:18,217 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-13 14:02:18,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:02:18,217 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:18,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640617453] [2022-12-13 14:02:18,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640617453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:18,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:18,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:02:18,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925937201] [2022-12-13 14:02:18,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:18,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:02:18,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:18,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:02:18,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:02:18,220 INFO L87 Difference]: Start difference. First operand 71 states and 102 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 14:02:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:18,618 INFO L93 Difference]: Finished difference Result 116 states and 165 transitions. [2022-12-13 14:02:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:02:18,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2022-12-13 14:02:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:18,621 INFO L225 Difference]: With dead ends: 116 [2022-12-13 14:02:18,621 INFO L226 Difference]: Without dead ends: 98 [2022-12-13 14:02:18,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:02:18,622 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 35 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:18,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 355 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:02:18,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-13 14:02:18,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2022-12-13 14:02:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 75 states have internal predecessors, (102), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 14:02:18,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2022-12-13 14:02:18,643 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 58 [2022-12-13 14:02:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:18,644 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2022-12-13 14:02:18,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 14:02:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2022-12-13 14:02:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 14:02:18,646 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:18,646 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:18,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-13 14:02:18,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:18,847 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:18,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:18,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1156270192, now seen corresponding path program 1 times [2022-12-13 14:02:18,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:18,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112863315] [2022-12-13 14:02:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:18,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:18,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:18,848 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:18,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 14:02:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:18,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:02:18,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:19,426 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:02:19,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:02:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:02:20,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:20,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112863315] [2022-12-13 14:02:20,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112863315] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:02:20,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:02:20,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-12-13 14:02:20,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406930190] [2022-12-13 14:02:20,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:02:20,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 14:02:20,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:20,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 14:02:20,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:02:20,825 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:02:24,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:24,410 INFO L93 Difference]: Finished difference Result 231 states and 332 transitions. [2022-12-13 14:02:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 14:02:24,412 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2022-12-13 14:02:24,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:24,413 INFO L225 Difference]: With dead ends: 231 [2022-12-13 14:02:24,413 INFO L226 Difference]: Without dead ends: 155 [2022-12-13 14:02:24,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=183, Invalid=323, Unknown=0, NotChecked=0, Total=506 [2022-12-13 14:02:24,414 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 159 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:24,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 551 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 14:02:24,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-12-13 14:02:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98. [2022-12-13 14:02:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 89 states have internal predecessors, (125), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 14:02:24,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 143 transitions. [2022-12-13 14:02:24,430 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 143 transitions. Word has length 58 [2022-12-13 14:02:24,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:24,431 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 143 transitions. [2022-12-13 14:02:24,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.571428571428571) internal successors, (64), 14 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:02:24,431 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 143 transitions. [2022-12-13 14:02:24,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-13 14:02:24,432 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:24,432 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:24,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 14:02:24,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:24,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:24,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:24,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1365284847, now seen corresponding path program 1 times [2022-12-13 14:02:24,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:24,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094500729] [2022-12-13 14:02:24,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:24,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:24,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:24,640 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:24,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 14:02:24,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:24,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 14:02:24,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:25,580 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 24 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:02:25,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:02:27,404 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:02:27,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:27,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094500729] [2022-12-13 14:02:27,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094500729] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:02:27,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:02:27,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-12-13 14:02:27,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781284974] [2022-12-13 14:02:27,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:02:27,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 14:02:27,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:27,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 14:02:27,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-12-13 14:02:27,408 INFO L87 Difference]: Start difference. First operand 98 states and 143 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:02:32,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:32,063 INFO L93 Difference]: Finished difference Result 254 states and 370 transitions. [2022-12-13 14:02:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 14:02:32,064 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-12-13 14:02:32,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:32,066 INFO L225 Difference]: With dead ends: 254 [2022-12-13 14:02:32,066 INFO L226 Difference]: Without dead ends: 164 [2022-12-13 14:02:32,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=354, Invalid=638, Unknown=0, NotChecked=0, Total=992 [2022-12-13 14:02:32,068 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 212 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:32,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 706 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 14:02:32,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-12-13 14:02:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 108. [2022-12-13 14:02:32,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 97 states have (on average 1.4639175257731958) internal successors, (142), 99 states have internal predecessors, (142), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 14:02:32,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 160 transitions. [2022-12-13 14:02:32,092 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 160 transitions. Word has length 63 [2022-12-13 14:02:32,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:32,092 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 160 transitions. [2022-12-13 14:02:32,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:02:32,093 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 160 transitions. [2022-12-13 14:02:32,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-13 14:02:32,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:32,093 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:32,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-13 14:02:32,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:32,295 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:32,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:32,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1400933040, now seen corresponding path program 2 times [2022-12-13 14:02:32,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:32,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141172132] [2022-12-13 14:02:32,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:02:32,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:32,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:32,300 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:32,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 14:02:32,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 14:02:32,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:02:32,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:02:32,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2022-12-13 14:02:32,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:02:32,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:32,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141172132] [2022-12-13 14:02:32,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141172132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:02:32,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:02:32,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:02:32,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405477147] [2022-12-13 14:02:32,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:02:32,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:02:32,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:32,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:02:32,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:02:32,524 INFO L87 Difference]: Start difference. First operand 108 states and 160 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 14:02:32,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:32,552 INFO L93 Difference]: Finished difference Result 131 states and 191 transitions. [2022-12-13 14:02:32,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:02:32,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2022-12-13 14:02:32,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:32,554 INFO L225 Difference]: With dead ends: 131 [2022-12-13 14:02:32,554 INFO L226 Difference]: Without dead ends: 108 [2022-12-13 14:02:32,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:02:32,555 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 13 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:32,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:02:32,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-12-13 14:02:32,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-12-13 14:02:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 97 states have (on average 1.443298969072165) internal successors, (140), 99 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 14:02:32,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 158 transitions. [2022-12-13 14:02:32,568 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 158 transitions. Word has length 76 [2022-12-13 14:02:32,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:32,568 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 158 transitions. [2022-12-13 14:02:32,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 14:02:32,568 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 158 transitions. [2022-12-13 14:02:32,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-12-13 14:02:32,569 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:32,569 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:32,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 14:02:32,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:32,771 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:32,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:32,772 INFO L85 PathProgramCache]: Analyzing trace with hash 856813194, now seen corresponding path program 1 times [2022-12-13 14:02:32,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:32,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609754584] [2022-12-13 14:02:32,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:32,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:32,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:32,777 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:32,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 14:02:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:32,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 14:02:32,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:34,508 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 24 proven. 155 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:02:34,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:02:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 4 proven. 163 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:02:38,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:02:38,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609754584] [2022-12-13 14:02:38,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609754584] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:02:38,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:02:38,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-12-13 14:02:38,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624819284] [2022-12-13 14:02:38,302 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:02:38,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-12-13 14:02:38,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:02:38,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-12-13 14:02:38,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-12-13 14:02:38,305 INFO L87 Difference]: Start difference. First operand 108 states and 158 transitions. Second operand has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 26 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:02:51,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:02:51,850 INFO L93 Difference]: Finished difference Result 357 states and 516 transitions. [2022-12-13 14:02:51,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 14:02:51,852 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 26 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 78 [2022-12-13 14:02:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:02:51,854 INFO L225 Difference]: With dead ends: 357 [2022-12-13 14:02:51,854 INFO L226 Difference]: Without dead ends: 257 [2022-12-13 14:02:51,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=729, Invalid=1433, Unknown=0, NotChecked=0, Total=2162 [2022-12-13 14:02:51,856 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 453 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:02:51,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1612 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-12-13 14:02:51,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-12-13 14:02:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 134. [2022-12-13 14:02:51,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 123 states have (on average 1.4878048780487805) internal successors, (183), 125 states have internal predecessors, (183), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 14:02:51,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 201 transitions. [2022-12-13 14:02:51,886 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 201 transitions. Word has length 78 [2022-12-13 14:02:51,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:02:51,886 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 201 transitions. [2022-12-13 14:02:51,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.923076923076923) internal successors, (102), 26 states have internal predecessors, (102), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:02:51,886 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 201 transitions. [2022-12-13 14:02:51,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-13 14:02:51,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:02:51,887 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:02:51,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-12-13 14:02:52,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:52,089 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:02:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:02:52,090 INFO L85 PathProgramCache]: Analyzing trace with hash -820893591, now seen corresponding path program 1 times [2022-12-13 14:02:52,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:02:52,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446550486] [2022-12-13 14:02:52,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:02:52,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:02:52,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:02:52,095 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:02:52,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-13 14:02:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:02:52,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 14:02:52,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:02:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 273 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:02:54,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:03:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 4 proven. 281 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:03:00,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:03:00,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446550486] [2022-12-13 14:03:00,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446550486] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:03:00,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:03:00,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-12-13 14:03:00,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610906553] [2022-12-13 14:03:00,090 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:03:00,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-13 14:03:00,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:03:00,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-13 14:03:00,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 14:03:00,092 INFO L87 Difference]: Start difference. First operand 134 states and 201 transitions. Second operand has 34 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 34 states have internal predecessors, (124), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:03:13,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:03:13,554 INFO L93 Difference]: Finished difference Result 358 states and 522 transitions. [2022-12-13 14:03:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-13 14:03:13,556 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 34 states have internal predecessors, (124), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2022-12-13 14:03:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:03:13,558 INFO L225 Difference]: With dead ends: 358 [2022-12-13 14:03:13,559 INFO L226 Difference]: Without dead ends: 232 [2022-12-13 14:03:13,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=991, Invalid=2315, Unknown=0, NotChecked=0, Total=3306 [2022-12-13 14:03:13,562 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 469 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:03:13,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1709 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-12-13 14:03:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-12-13 14:03:13,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 138. [2022-12-13 14:03:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 127 states have (on average 1.4960629921259843) internal successors, (190), 129 states have internal predecessors, (190), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 14:03:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 208 transitions. [2022-12-13 14:03:13,595 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 208 transitions. Word has length 89 [2022-12-13 14:03:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:03:13,596 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 208 transitions. [2022-12-13 14:03:13,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.6470588235294117) internal successors, (124), 34 states have internal predecessors, (124), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:03:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 208 transitions. [2022-12-13 14:03:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 14:03:13,598 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:03:13,598 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:03:13,608 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-13 14:03:13,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:03:13,799 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:03:13,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:03:13,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1264403958, now seen corresponding path program 2 times [2022-12-13 14:03:13,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:03:13,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613198132] [2022-12-13 14:03:13,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:03:13,802 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:03:13,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:03:13,805 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:03:13,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 14:03:13,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 14:03:13,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:03:13,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:03:13,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:03:14,020 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2022-12-13 14:03:14,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:03:14,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:03:14,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613198132] [2022-12-13 14:03:14,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613198132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:03:14,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:03:14,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:03:14,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105334072] [2022-12-13 14:03:14,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:03:14,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:03:14,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:03:14,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:03:14,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:03:14,023 INFO L87 Difference]: Start difference. First operand 138 states and 208 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 14:03:14,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:03:14,125 INFO L93 Difference]: Finished difference Result 163 states and 241 transitions. [2022-12-13 14:03:14,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:03:14,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 114 [2022-12-13 14:03:14,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:03:14,127 INFO L225 Difference]: With dead ends: 163 [2022-12-13 14:03:14,127 INFO L226 Difference]: Without dead ends: 138 [2022-12-13 14:03:14,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:03:14,128 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 32 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:03:14,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:03:14,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-13 14:03:14,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-12-13 14:03:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 127 states have (on average 1.4803149606299213) internal successors, (188), 129 states have internal predecessors, (188), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 14:03:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 206 transitions. [2022-12-13 14:03:14,149 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 206 transitions. Word has length 114 [2022-12-13 14:03:14,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:03:14,149 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 206 transitions. [2022-12-13 14:03:14,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 14:03:14,150 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 206 transitions. [2022-12-13 14:03:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 14:03:14,151 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:03:14,151 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:03:14,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 14:03:14,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:03:14,352 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:03:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:03:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1851209972, now seen corresponding path program 1 times [2022-12-13 14:03:14,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:03:14,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219523462] [2022-12-13 14:03:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:03:14,356 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:03:14,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:03:14,359 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:03:14,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 14:03:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:03:14,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 14:03:14,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:03:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 24 proven. 737 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:03:19,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:03:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 4 proven. 745 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:03:32,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:03:32,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219523462] [2022-12-13 14:03:32,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219523462] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:03:32,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:03:32,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-12-13 14:03:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898123740] [2022-12-13 14:03:32,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:03:32,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-12-13 14:03:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:03:32,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-12-13 14:03:32,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=1777, Unknown=0, NotChecked=0, Total=2450 [2022-12-13 14:03:32,263 INFO L87 Difference]: Start difference. First operand 138 states and 206 transitions. Second operand has 50 states, 50 states have (on average 3.48) internal successors, (174), 50 states have internal predecessors, (174), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:04:27,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:27,966 INFO L93 Difference]: Finished difference Result 591 states and 864 transitions. [2022-12-13 14:04:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-12-13 14:04:27,968 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.48) internal successors, (174), 50 states have internal predecessors, (174), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 114 [2022-12-13 14:04:27,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:27,970 INFO L225 Difference]: With dead ends: 591 [2022-12-13 14:04:27,970 INFO L226 Difference]: Without dead ends: 461 [2022-12-13 14:04:27,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=2901, Invalid=6029, Unknown=0, NotChecked=0, Total=8930 [2022-12-13 14:04:27,973 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1722 mSDsluCounter, 4808 mSDsCounter, 0 mSdLazyCounter, 4147 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1722 SdHoareTripleChecker+Valid, 5017 SdHoareTripleChecker+Invalid, 4195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 4147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:27,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1722 Valid, 5017 Invalid, 4195 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 4147 Invalid, 0 Unknown, 0 Unchecked, 28.7s Time] [2022-12-13 14:04:27,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-12-13 14:04:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 206. [2022-12-13 14:04:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 195 states have (on average 1.5435897435897437) internal successors, (301), 197 states have internal predecessors, (301), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 14:04:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 319 transitions. [2022-12-13 14:04:28,012 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 319 transitions. Word has length 114 [2022-12-13 14:04:28,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:28,013 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 319 transitions. [2022-12-13 14:04:28,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.48) internal successors, (174), 50 states have internal predecessors, (174), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 14:04:28,013 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 319 transitions. [2022-12-13 14:04:28,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-12-13 14:04:28,014 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:28,014 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:28,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-12-13 14:04:28,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:28,215 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:04:28,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:28,215 INFO L85 PathProgramCache]: Analyzing trace with hash -432692949, now seen corresponding path program 1 times [2022-12-13 14:04:28,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:28,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993955056] [2022-12-13 14:04:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:28,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:28,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:28,217 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:28,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 14:04:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:28,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:04:28,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:28,689 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-12-13 14:04:28,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2022-12-13 14:04:29,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:29,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993955056] [2022-12-13 14:04:29,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993955056] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:04:29,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:29,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-12-13 14:04:29,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770266980] [2022-12-13 14:04:29,117 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:29,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:04:29,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:04:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:04:29,118 INFO L87 Difference]: Start difference. First operand 206 states and 319 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:04:29,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:29,457 INFO L93 Difference]: Finished difference Result 211 states and 323 transitions. [2022-12-13 14:04:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:04:29,458 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 119 [2022-12-13 14:04:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:29,460 INFO L225 Difference]: With dead ends: 211 [2022-12-13 14:04:29,460 INFO L226 Difference]: Without dead ends: 206 [2022-12-13 14:04:29,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:04:29,461 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 19 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:29,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 245 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:04:29,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-12-13 14:04:29,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-12-13 14:04:29,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 195 states have (on average 1.5384615384615385) internal successors, (300), 197 states have internal predecessors, (300), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 14:04:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 318 transitions. [2022-12-13 14:04:29,495 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 318 transitions. Word has length 119 [2022-12-13 14:04:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:29,495 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 318 transitions. [2022-12-13 14:04:29,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:04:29,495 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 318 transitions. [2022-12-13 14:04:29,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 14:04:29,496 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:29,496 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:29,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-12-13 14:04:29,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:29,698 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:04:29,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:29,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1556286225, now seen corresponding path program 1 times [2022-12-13 14:04:29,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:29,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390920302] [2022-12-13 14:04:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:29,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:29,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:29,704 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:29,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 14:04:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:29,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:04:29,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2022-12-13 14:04:30,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:04:30,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:30,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390920302] [2022-12-13 14:04:30,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390920302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:30,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:30,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:04:30,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407847024] [2022-12-13 14:04:30,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:30,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:04:30,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:30,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:04:30,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:04:30,059 INFO L87 Difference]: Start difference. First operand 206 states and 318 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 14:04:30,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:30,283 INFO L93 Difference]: Finished difference Result 219 states and 331 transitions. [2022-12-13 14:04:30,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:04:30,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 121 [2022-12-13 14:04:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:30,285 INFO L225 Difference]: With dead ends: 219 [2022-12-13 14:04:30,285 INFO L226 Difference]: Without dead ends: 213 [2022-12-13 14:04:30,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:04:30,285 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:30,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 231 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:04:30,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-12-13 14:04:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 211. [2022-12-13 14:04:30,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 200 states have (on average 1.525) internal successors, (305), 202 states have internal predecessors, (305), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 14:04:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 323 transitions. [2022-12-13 14:04:30,314 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 323 transitions. Word has length 121 [2022-12-13 14:04:30,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:30,314 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 323 transitions. [2022-12-13 14:04:30,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 14:04:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 323 transitions. [2022-12-13 14:04:30,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 14:04:30,315 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:30,315 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:30,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-13 14:04:30,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:30,516 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:04:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1613544527, now seen corresponding path program 1 times [2022-12-13 14:04:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:30,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303583014] [2022-12-13 14:04:30,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:30,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:30,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:30,522 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:30,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 14:04:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:30,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:04:30,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2022-12-13 14:04:30,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:04:30,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:30,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303583014] [2022-12-13 14:04:30,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303583014] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:04:30,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:04:30,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:04:30,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304822563] [2022-12-13 14:04:30,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:04:30,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:04:30,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:04:30,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:04:30,847 INFO L87 Difference]: Start difference. First operand 211 states and 323 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 14:04:31,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:31,070 INFO L93 Difference]: Finished difference Result 217 states and 328 transitions. [2022-12-13 14:04:31,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:04:31,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 121 [2022-12-13 14:04:31,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:31,072 INFO L225 Difference]: With dead ends: 217 [2022-12-13 14:04:31,072 INFO L226 Difference]: Without dead ends: 199 [2022-12-13 14:04:31,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:04:31,073 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:31,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 296 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:04:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-12-13 14:04:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-12-13 14:04:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 188 states have (on average 1.5425531914893618) internal successors, (290), 191 states have internal predecessors, (290), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-13 14:04:31,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 305 transitions. [2022-12-13 14:04:31,102 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 305 transitions. Word has length 121 [2022-12-13 14:04:31,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:31,103 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 305 transitions. [2022-12-13 14:04:31,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 14:04:31,103 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 305 transitions. [2022-12-13 14:04:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-12-13 14:04:31,104 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:31,104 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:31,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 14:04:31,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:31,305 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:04:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:31,306 INFO L85 PathProgramCache]: Analyzing trace with hash 564140262, now seen corresponding path program 1 times [2022-12-13 14:04:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:31,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1807910014] [2022-12-13 14:04:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:04:31,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:31,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:31,311 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:31,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 14:04:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:04:31,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 14:04:31,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:31,792 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-12-13 14:04:31,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 860 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2022-12-13 14:04:32,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:32,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1807910014] [2022-12-13 14:04:32,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1807910014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:04:32,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:04:32,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-12-13 14:04:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346486369] [2022-12-13 14:04:32,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:32,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:04:32,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:04:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:04:32,117 INFO L87 Difference]: Start difference. First operand 199 states and 305 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:04:32,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:32,801 INFO L93 Difference]: Finished difference Result 226 states and 338 transitions. [2022-12-13 14:04:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:04:32,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 126 [2022-12-13 14:04:32,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:32,803 INFO L225 Difference]: With dead ends: 226 [2022-12-13 14:04:32,804 INFO L226 Difference]: Without dead ends: 196 [2022-12-13 14:04:32,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:04:32,805 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 6 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:32,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 374 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:04:32,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-12-13 14:04:32,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2022-12-13 14:04:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 186 states have (on average 1.3010752688172043) internal successors, (242), 188 states have internal predecessors, (242), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 14:04:32,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 254 transitions. [2022-12-13 14:04:32,829 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 254 transitions. Word has length 126 [2022-12-13 14:04:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:32,829 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 254 transitions. [2022-12-13 14:04:32,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:04:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 254 transitions. [2022-12-13 14:04:32,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 14:04:32,830 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:04:32,830 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:04:32,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-12-13 14:04:33,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:33,032 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:04:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:04:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash 300411547, now seen corresponding path program 2 times [2022-12-13 14:04:33,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:04:33,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657825389] [2022-12-13 14:04:33,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:04:33,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:04:33,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:04:33,034 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:04:33,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-13 14:04:33,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:04:33,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:04:33,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 14:04:33,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2022-12-13 14:04:34,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:34,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:04:34,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657825389] [2022-12-13 14:04:34,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657825389] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:04:34,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [936786309] [2022-12-13 14:04:34,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:04:34,979 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 14:04:34,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 14:04:34,980 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 14:04:34,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-12-13 14:04:35,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:04:35,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:04:35,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:04:35,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:04:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2022-12-13 14:04:35,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:04:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 866 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 857 trivial. 0 not checked. [2022-12-13 14:04:35,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [936786309] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:04:35,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:04:35,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-12-13 14:04:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120641744] [2022-12-13 14:04:35,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:04:35,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:04:35,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:04:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:04:35,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:04:35,737 INFO L87 Difference]: Start difference. First operand 196 states and 254 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:04:36,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:04:36,878 INFO L93 Difference]: Finished difference Result 197 states and 255 transitions. [2022-12-13 14:04:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:04:36,878 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 130 [2022-12-13 14:04:36,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:04:36,878 INFO L225 Difference]: With dead ends: 197 [2022-12-13 14:04:36,879 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 14:04:36,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 391 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-12-13 14:04:36,880 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 11 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:04:36,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 276 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 14:04:36,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 14:04:36,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 14:04:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:04:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 14:04:36,881 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 130 [2022-12-13 14:04:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:04:36,881 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 14:04:36,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 14:04:36,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 14:04:36,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 14:04:36,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-13 14:04:36,884 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-12-13 14:04:36,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-13 14:04:37,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-12-13 14:04:37,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3c3b5fc5-eb0d-47a9-9844-d65635b2f69a/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt [2022-12-13 14:04:37,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.