./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a --- 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-38b53e6 [2022-11-26 00:43:20,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:43:20,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:43:20,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:43:20,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:43:20,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:43:20,921 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:43:20,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:43:20,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:43:20,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:43:20,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:43:20,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:43:20,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:43:20,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:43:20,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:43:20,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:43:20,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:43:20,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:43:20,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:43:20,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:43:20,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:43:20,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:43:20,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:43:20,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:43:20,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:43:20,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:43:20,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:43:20,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:43:20,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:43:20,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:43:20,980 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:43:20,981 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:43:20,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:43:20,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:43:20,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:43:20,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:43:20,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:43:20,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:43:20,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:43:20,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:43:20,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:43:20,989 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:43:21,024 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:43:21,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:43:21,027 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:43:21,027 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:43:21,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:43:21,029 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:43:21,029 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:43:21,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:43:21,030 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:43:21,030 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:43:21,031 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:43:21,032 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:43:21,032 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:43:21,032 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:43:21,033 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:43:21,033 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:43:21,033 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:43:21,033 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:43:21,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:43:21,035 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:43:21,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:43:21,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:43:21,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:43:21,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:43:21,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:43:21,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:43:21,037 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:43:21,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:43:21,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:43:21,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:43:21,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:43:21,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:43:21,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:43:21,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:43:21,041 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:43:21,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:43:21,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:43:21,042 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:43:21,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:43:21,043 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:43:21,043 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:43:21,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a [2022-11-26 00:43:21,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:43:21,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:43:21,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:43:21,491 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:43:21,492 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:43:21,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2022-11-26 00:43:24,928 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:43:25,306 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:43:25,307 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2022-11-26 00:43:25,321 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/data/39e49550f/7087116d4d044662a84763a536e58fb9/FLAGffcda0561 [2022-11-26 00:43:25,574 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/data/39e49550f/7087116d4d044662a84763a536e58fb9 [2022-11-26 00:43:25,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:43:25,586 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:43:25,592 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:43:25,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:43:25,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:43:25,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:43:25" (1/1) ... [2022-11-26 00:43:25,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124ad45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:25, skipping insertion in model container [2022-11-26 00:43:25,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:43:25" (1/1) ... [2022-11-26 00:43:25,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:43:25,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:43:25,853 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_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2022-11-26 00:43:25,863 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_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2022-11-26 00:43:25,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:43:25,930 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:43:25,950 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_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2022-11-26 00:43:25,952 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_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2022-11-26 00:43:25,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:43:26,020 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:43:26,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26 WrapperNode [2022-11-26 00:43:26,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:43:26,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:43:26,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:43:26,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:43:26,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,068 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2022-11-26 00:43:26,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:43:26,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:43:26,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:43:26,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:43:26,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,103 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:43:26,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:43:26,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:43:26,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:43:26,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (1/1) ... [2022-11-26 00:43:26,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:43:26,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:26,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:43:26,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:43:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:43:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-26 00:43:26,246 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-26 00:43:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-11-26 00:43:26,246 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-11-26 00:43:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:43:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:43:26,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:43:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:43:26,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:43:26,397 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:43:26,400 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:43:27,052 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:43:27,377 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:43:27,383 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 00:43:27,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:43:27 BoogieIcfgContainer [2022-11-26 00:43:27,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:43:27,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:43:27,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:43:27,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:43:27,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:43:25" (1/3) ... [2022-11-26 00:43:27,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c262bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:43:27, skipping insertion in model container [2022-11-26 00:43:27,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:26" (2/3) ... [2022-11-26 00:43:27,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c262bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:43:27, skipping insertion in model container [2022-11-26 00:43:27,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:43:27" (3/3) ... [2022-11-26 00:43:27,416 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-3a.c.cil.c [2022-11-26 00:43:27,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:43:27,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:43:27,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:43:27,546 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@498b737e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:43:27,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:43:27,552 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 38 states have internal predecessors, (53), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:43:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:43:27,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:27,569 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:43:27,570 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:43:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash 9631492, now seen corresponding path program 1 times [2022-11-26 00:43:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:43:27,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797977061] [2022-11-26 00:43:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:27,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:43:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:43:27,739 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:43:27,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:43:27,794 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:43:27,796 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:43:27,799 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-26 00:43:27,801 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-26 00:43:27,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:43:27,808 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-11-26 00:43:27,816 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:43:27,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:43:27 BoogieIcfgContainer [2022-11-26 00:43:27,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:43:27,850 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:43:27,850 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:43:27,850 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:43:27,851 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:43:27" (3/4) ... [2022-11-26 00:43:27,856 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-26 00:43:27,856 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:43:27,858 INFO L158 Benchmark]: Toolchain (without parser) took 2271.28ms. Allocated memory is still 180.4MB. Free memory was 144.4MB in the beginning and 136.4MB in the end (delta: 8.0MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2022-11-26 00:43:27,859 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 134.2MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:43:27,860 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.92ms. Allocated memory is still 180.4MB. Free memory was 144.4MB in the beginning and 130.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-26 00:43:27,861 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.57ms. Allocated memory is still 180.4MB. Free memory was 130.5MB in the beginning and 128.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:43:27,863 INFO L158 Benchmark]: Boogie Preprocessor took 40.02ms. Allocated memory is still 180.4MB. Free memory was 128.4MB in the beginning and 127.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:43:27,872 INFO L158 Benchmark]: RCFGBuilder took 1276.61ms. Allocated memory is still 180.4MB. Free memory was 127.0MB in the beginning and 85.7MB in the end (delta: 41.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2022-11-26 00:43:27,873 INFO L158 Benchmark]: TraceAbstraction took 438.66ms. Allocated memory is still 180.4MB. Free memory was 148.6MB in the beginning and 137.5MB in the end (delta: 11.2MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-11-26 00:43:27,873 INFO L158 Benchmark]: Witness Printer took 6.26ms. Allocated memory is still 180.4MB. Free memory was 137.5MB in the beginning and 136.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:43:27,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 134.2MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 428.92ms. Allocated memory is still 180.4MB. Free memory was 144.4MB in the beginning and 130.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.57ms. Allocated memory is still 180.4MB. Free memory was 130.5MB in the beginning and 128.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.02ms. Allocated memory is still 180.4MB. Free memory was 128.4MB in the beginning and 127.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1276.61ms. Allocated memory is still 180.4MB. Free memory was 127.0MB in the beginning and 85.7MB in the end (delta: 41.3MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 438.66ms. Allocated memory is still 180.4MB. Free memory was 148.6MB in the beginning and 137.5MB in the end (delta: 11.2MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Witness Printer took 6.26ms. Allocated memory is still 180.4MB. Free memory was 137.5MB in the beginning and 136.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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: [L309] COND TRUE __VERIFIER_nondet_int() [L310] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [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 < 1.5f) 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 4 procedures, 51 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=51occurred 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, 4 NumberOfCodeBlocks, 4 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 [2022-11-26 00:43:27,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a --- 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-38b53e6 [2022-11-26 00:43:30,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:43:30,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:43:31,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:43:31,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:43:31,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:43:31,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:43:31,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:43:31,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:43:31,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:43:31,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:43:31,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:43:31,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:43:31,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:43:31,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:43:31,072 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:43:31,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:43:31,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:43:31,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:43:31,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:43:31,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:43:31,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:43:31,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:43:31,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:43:31,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:43:31,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:43:31,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:43:31,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:43:31,112 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:43:31,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:43:31,115 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:43:31,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:43:31,119 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:43:31,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:43:31,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:43:31,131 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:43:31,132 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:43:31,133 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:43:31,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:43:31,134 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:43:31,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:43:31,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-26 00:43:31,191 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:43:31,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:43:31,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:43:31,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:43:31,196 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:43:31,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:43:31,197 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:43:31,198 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:43:31,198 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:43:31,198 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:43:31,200 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:43:31,200 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:43:31,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:43:31,202 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:43:31,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:43:31,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:43:31,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:43:31,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:43:31,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:43:31,204 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-26 00:43:31,204 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-26 00:43:31,204 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-26 00:43:31,204 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:43:31,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:43:31,205 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:43:31,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:43:31,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:43:31,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-26 00:43:31,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:43:31,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:43:31,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:43:31,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:43:31,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:43:31,208 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-26 00:43:31,209 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-26 00:43:31,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:43:31,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:43:31,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-26 00:43:31,210 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a [2022-11-26 00:43:31,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:43:31,713 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:43:31,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:43:31,719 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:43:31,719 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:43:31,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2022-11-26 00:43:35,157 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:43:35,407 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:43:35,408 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2022-11-26 00:43:35,417 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/data/95db87fcc/01ca91b5c2e0439e822199a706bd95d2/FLAG90ba15715 [2022-11-26 00:43:35,435 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/data/95db87fcc/01ca91b5c2e0439e822199a706bd95d2 [2022-11-26 00:43:35,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:43:35,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:43:35,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:43:35,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:43:35,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:43:35,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:35,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3adda42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35, skipping insertion in model container [2022-11-26 00:43:35,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:35,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:43:35,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:43:35,754 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_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2022-11-26 00:43:35,761 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_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2022-11-26 00:43:35,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:43:35,870 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:43:35,906 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_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2022-11-26 00:43:35,910 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_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2022-11-26 00:43:35,960 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:43:35,991 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:43:35,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35 WrapperNode [2022-11-26 00:43:35,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:43:35,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:43:35,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:43:35,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:43:36,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,045 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2022-11-26 00:43:36,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:43:36,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:43:36,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:43:36,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:43:36,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,082 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:43:36,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:43:36,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:43:36,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:43:36,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (1/1) ... [2022-11-26 00:43:36,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:43:36,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:43:36,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:43:36,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:43:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:43:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-26 00:43:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-26 00:43:36,201 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-26 00:43:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-11-26 00:43:36,201 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-11-26 00:43:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:43:36,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:43:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:43:36,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:43:36,347 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:43:36,350 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:43:38,995 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:43:39,004 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:43:39,005 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 00:43:39,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:43:39 BoogieIcfgContainer [2022-11-26 00:43:39,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:43:39,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:43:39,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:43:39,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:43:39,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:43:35" (1/3) ... [2022-11-26 00:43:39,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5c260b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:43:39, skipping insertion in model container [2022-11-26 00:43:39,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:43:35" (2/3) ... [2022-11-26 00:43:39,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b5c260b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:43:39, skipping insertion in model container [2022-11-26 00:43:39,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:43:39" (3/3) ... [2022-11-26 00:43:39,021 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-3a.c.cil.c [2022-11-26 00:43:39,042 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:43:39,042 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-26 00:43:39,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:43:39,112 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@605a35c9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:43:39,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-26 00:43:39,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-26 00:43:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:43:39,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:39,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:39,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:43:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:39,137 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2022-11-26 00:43:39,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:43:39,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276247581] [2022-11-26 00:43:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:39,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:43:39,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:43:39,162 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:43:39,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-26 00:43:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:43:39,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-26 00:43:39,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:43:39,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:43:39,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:43:39,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:43:39,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276247581] [2022-11-26 00:43:39,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276247581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:43:39,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:43:39,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:43:39,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564149649] [2022-11-26 00:43:39,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:43:39,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:43:39,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:43:39,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:43:39,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:43:39,905 INFO L87 Difference]: Start difference. First operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2022-11-26 00:43:39,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:43:39,944 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2022-11-26 00:43:39,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:43:39,947 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 [2022-11-26 00:43:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:43:39,960 INFO L225 Difference]: With dead ends: 121 [2022-11-26 00:43:39,961 INFO L226 Difference]: Without dead ends: 56 [2022-11-26 00:43:39,966 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 [2022-11-26 00:43:39,976 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 [2022-11-26 00:43:39,978 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] [2022-11-26 00:43:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-26 00:43:40,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-26 00:43:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:43:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2022-11-26 00:43:40,059 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 7 [2022-11-26 00:43:40,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:43:40,061 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2022-11-26 00:43:40,062 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) [2022-11-26 00:43:40,062 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2022-11-26 00:43:40,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-26 00:43:40,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:43:40,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:43:40,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:43:40,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:43:40,291 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:43:40,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:43:40,292 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2022-11-26 00:43:40,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:43:40,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394832599] [2022-11-26 00:43:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:43:40,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:43:40,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:43:40,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:43:40,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-26 00:45:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:45:01,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:45:01,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:45:36,441 WARN L233 SmtUtils]: Spent 10.59s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:46:10,592 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 (/ 3.0 2.0)))) (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 [2022-11-26 00:46:12,649 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 (/ 3.0 2.0)))) (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 [2022-11-26 00:46:12,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:46:12,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:46:12,651 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:46:12,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394832599] [2022-11-26 00:46:12,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394832599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:46:12,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:46:12,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:46:12,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177470783] [2022-11-26 00:46:12,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:46:12,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:46:12,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:46:12,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:46:12,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=13, Unknown=7, NotChecked=8, Total=42 [2022-11-26 00:46:12,655 INFO L87 Difference]: Start difference. First operand 56 states and 74 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) [2022-11-26 00:46:14,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:16,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:18,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:20,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:23,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:29,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:31,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-26 00:46:34,078 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse0)) (.cse2 (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) .cse1 (or (and (or (not .cse1) (not .cse2)) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (and .cse1 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse2)) .cse2 (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-11-26 00:46:36,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:38,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:40,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:42,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:44,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:46,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:48,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:50,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:52,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:54,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:56,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:46:58,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:00,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:03,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:05,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:07,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:09,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:11,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:13,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:15,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:17,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:19,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:21,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:23,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:25,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:27,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:30,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:32,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:34,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:36,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:38,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:40,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:42,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:44,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:46,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:48,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:50,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:52,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:54,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:56,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:47:58,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:01,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:03,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:05,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:07,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:09,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:11,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:13,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:15,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:17,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:19,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:21,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:23,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:25,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:28,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:30,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:32,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:34,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:36,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:38,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:40,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:42,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:44,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:46,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:48,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:48:48,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:48,731 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2022-11-26 00:48:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:48:48,732 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 [2022-11-26 00:48:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:48,733 INFO L225 Difference]: With dead ends: 56 [2022-11-26 00:48:48,733 INFO L226 Difference]: Without dead ends: 51 [2022-11-26 00:48:48,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=21, Invalid=19, Unknown=10, NotChecked=22, Total=72 [2022-11-26 00:48:48,734 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 70 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 72 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 149.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 72 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 149.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:48,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 171 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 72 Unknown, 73 Unchecked, 149.4s Time] [2022-11-26 00:48:48,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-26 00:48:48,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-26 00:48:48,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 38 states have (on average 1.368421052631579) internal successors, (52), 39 states have internal predecessors, (52), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-26 00:48:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2022-11-26 00:48:48,743 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 7 [2022-11-26 00:48:48,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:48,743 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2022-11-26 00:48:48,743 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) [2022-11-26 00:48:48,744 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2022-11-26 00:48:48,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-26 00:48:48,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:48,745 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:48:48,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:48,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:48:48,946 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:48:48,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:48,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1012278713, now seen corresponding path program 1 times [2022-11-26 00:48:48,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:48:48,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981363752] [2022-11-26 00:48:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:48,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:48:48,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:48:48,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:48:48,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-26 00:48:49,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:49,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:48:49,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:48:49,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:48:49,508 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:48:49,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981363752] [2022-11-26 00:48:49,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981363752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:49,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:49,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:48:49,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028822892] [2022-11-26 00:48:49,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:49,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:48:49,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:48:49,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:48:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:48:49,511 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-26 00:48:50,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:50,064 INFO L93 Difference]: Finished difference Result 100 states and 137 transitions. [2022-11-26 00:48:50,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:48:50,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2022-11-26 00:48:50,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:50,067 INFO L225 Difference]: With dead ends: 100 [2022-11-26 00:48:50,068 INFO L226 Difference]: Without dead ends: 72 [2022-11-26 00:48:50,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:48:50,069 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 20 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:50,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 432 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:48:50,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-26 00:48:50,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2022-11-26 00:48:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 48 states have internal predecessors, (60), 10 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-26 00:48:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2022-11-26 00:48:50,082 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 32 [2022-11-26 00:48:50,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:50,082 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2022-11-26 00:48:50,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-26 00:48:50,083 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2022-11-26 00:48:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-26 00:48:50,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:50,085 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-26 00:48:50,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:50,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:48:50,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:48:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:50,292 INFO L85 PathProgramCache]: Analyzing trace with hash -666477956, now seen corresponding path program 1 times [2022-11-26 00:48:50,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:48:50,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984168730] [2022-11-26 00:48:50,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:50,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:48:50,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:48:50,294 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:48:50,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-26 00:48:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:50,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:48:50,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:48:51,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:48:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:48:51,396 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:48:51,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984168730] [2022-11-26 00:48:51,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984168730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:48:51,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1519896823] [2022-11-26 00:48:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:51,397 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:48:51,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:48:51,402 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:48:51,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-26 00:48:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:51,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:48:51,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:48:51,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:48:52,002 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:48:52,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1519896823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:48:52,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236274986] [2022-11-26 00:48:52,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:52,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:52,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:48:52,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:48:52,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:48:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:52,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:48:52,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:48:52,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:48:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:48:52,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236274986] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:48:52,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:48:52,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 9 [2022-11-26 00:48:52,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138157572] [2022-11-26 00:48:52,645 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:48:52,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:48:52,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:48:52,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:48:52,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:48:52,647 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:48:53,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:53,568 INFO L93 Difference]: Finished difference Result 122 states and 162 transitions. [2022-11-26 00:48:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:48:53,572 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2022-11-26 00:48:53,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:53,573 INFO L225 Difference]: With dead ends: 122 [2022-11-26 00:48:53,573 INFO L226 Difference]: Without dead ends: 94 [2022-11-26 00:48:53,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-26 00:48:53,574 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 27 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:53,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 500 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:48:53,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-26 00:48:53,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 72. [2022-11-26 00:48:53,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 55 states have internal predecessors, (68), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-26 00:48:53,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2022-11-26 00:48:53,604 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 36 [2022-11-26 00:48:53,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:53,605 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2022-11-26 00:48:53,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-26 00:48:53,605 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2022-11-26 00:48:53,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-26 00:48:53,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:53,608 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2022-11-26 00:48:53,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:53,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-11-26 00:48:54,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:54,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:54,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:48:54,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:54,216 INFO L85 PathProgramCache]: Analyzing trace with hash 506323174, now seen corresponding path program 1 times [2022-11-26 00:48:54,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:48:54,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650743226] [2022-11-26 00:48:54,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:54,216 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 [2022-11-26 00:48:54,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:48:54,217 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:48:54,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-26 00:48:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:54,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:48:54,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:54,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:48:54,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:48:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:48:55,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:48:55,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650743226] [2022-11-26 00:48:55,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650743226] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:48:55,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1656287412] [2022-11-26 00:48:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:55,139 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:48:55,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:48:55,145 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:48:55,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-26 00:48:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:55,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:48:55,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:55,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:48:55,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:48:55,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1656287412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:55,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-26 00:48:55,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8] total 12 [2022-11-26 00:48:55,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716849412] [2022-11-26 00:48:55,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:55,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:48:55,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:48:55,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:48:55,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:48:55,819 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-26 00:48:56,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:56,900 INFO L93 Difference]: Finished difference Result 115 states and 151 transitions. [2022-11-26 00:48:56,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:48:56,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-11-26 00:48:56,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:56,909 INFO L225 Difference]: With dead ends: 115 [2022-11-26 00:48:56,910 INFO L226 Difference]: Without dead ends: 92 [2022-11-26 00:48:56,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:48:56,911 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 20 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:56,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 524 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:48:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-26 00:48:56,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 80. [2022-11-26 00:48:56,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.271186440677966) internal successors, (75), 61 states have internal predecessors, (75), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-26 00:48:56,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2022-11-26 00:48:56,924 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 40 [2022-11-26 00:48:56,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:56,925 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2022-11-26 00:48:56,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-26 00:48:56,925 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2022-11-26 00:48:56,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-26 00:48:56,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:56,933 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:48:56,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:57,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:57,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:48:57,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:48:57,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:57,337 INFO L85 PathProgramCache]: Analyzing trace with hash -437635673, now seen corresponding path program 2 times [2022-11-26 00:48:57,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:48:57,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742902770] [2022-11-26 00:48:57,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-26 00:48:57,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:48:57,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:48:57,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:48:57,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-26 00:48:57,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-26 00:48:57,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:48:57,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:48:57,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-26 00:48:57,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:48:57,906 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:48:57,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742902770] [2022-11-26 00:48:57,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742902770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:57,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:57,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:48:57,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632374975] [2022-11-26 00:48:57,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:57,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:48:57,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:48:57,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:48:57,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:48:57,908 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-26 00:49:00,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:49:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:00,608 INFO L93 Difference]: Finished difference Result 107 states and 138 transitions. [2022-11-26 00:49:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:49:00,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-26 00:49:00,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:00,611 INFO L225 Difference]: With dead ends: 107 [2022-11-26 00:49:00,611 INFO L226 Difference]: Without dead ends: 105 [2022-11-26 00:49:00,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:49:00,612 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 18 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:00,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 339 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2022-11-26 00:49:00,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-26 00:49:00,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2022-11-26 00:49:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 66 states have internal predecessors, (80), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2022-11-26 00:49:00,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2022-11-26 00:49:00,646 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 111 transitions. Word has length 40 [2022-11-26 00:49:00,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:00,646 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 111 transitions. [2022-11-26 00:49:00,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-26 00:49:00,647 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 111 transitions. [2022-11-26 00:49:00,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-26 00:49:00,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:00,653 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:00,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:00,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:49:00,866 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:49:00,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash -380377371, now seen corresponding path program 1 times [2022-11-26 00:49:00,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:49:00,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578738091] [2022-11-26 00:49:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:00,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:49:00,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:49:00,868 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:49:00,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-26 00:49:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:00,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 00:49:00,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:49:01,372 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-26 00:49:01,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:49:01,373 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:49:01,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578738091] [2022-11-26 00:49:01,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578738091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:49:01,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:49:01,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:49:01,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441302311] [2022-11-26 00:49:01,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:49:01,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:49:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:49:01,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:49:01,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:49:01,375 INFO L87 Difference]: Start difference. First operand 86 states and 111 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-26 00:49:03,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-11-26 00:49:03,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:03,969 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2022-11-26 00:49:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:49:03,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-26 00:49:03,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:03,971 INFO L225 Difference]: With dead ends: 92 [2022-11-26 00:49:03,971 INFO L226 Difference]: Without dead ends: 90 [2022-11-26 00:49:03,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:49:03,973 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 19 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:03,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 293 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-26 00:49:03,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-26 00:49:03,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2022-11-26 00:49:03,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 64 states have internal predecessors, (78), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-26 00:49:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2022-11-26 00:49:03,987 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 40 [2022-11-26 00:49:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:03,988 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2022-11-26 00:49:03,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-26 00:49:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2022-11-26 00:49:03,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-26 00:49:03,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:03,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:04,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:04,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:49:04,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:49:04,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:04,203 INFO L85 PathProgramCache]: Analyzing trace with hash -830434842, now seen corresponding path program 1 times [2022-11-26 00:49:04,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:49:04,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56785163] [2022-11-26 00:49:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:04,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:49:04,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:49:04,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:49:04,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-26 00:49:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:04,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:49:04,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:49:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:49:04,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:49:05,578 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:49:05,579 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:49:05,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56785163] [2022-11-26 00:49:05,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56785163] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:49:05,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [546003608] [2022-11-26 00:49:05,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:05,579 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:49:05,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:49:05,583 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:49:05,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-26 00:49:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:05,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:49:05,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:49:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:49:05,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:49:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:49:06,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [546003608] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:49:06,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080391026] [2022-11-26 00:49:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:06,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:49:06,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:49:06,443 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:49:06,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-26 00:49:06,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:06,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:49:06,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:49:06,728 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:49:06,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:49:07,241 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:49:07,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080391026] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:49:07,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-26 00:49:07,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 9 [2022-11-26 00:49:07,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171961439] [2022-11-26 00:49:07,242 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-26 00:49:07,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:49:07,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:49:07,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:49:07,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:49:07,244 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-26 00:49:08,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:08,327 INFO L93 Difference]: Finished difference Result 130 states and 171 transitions. [2022-11-26 00:49:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:49:08,328 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-11-26 00:49:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:08,331 INFO L225 Difference]: With dead ends: 130 [2022-11-26 00:49:08,331 INFO L226 Difference]: Without dead ends: 119 [2022-11-26 00:49:08,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:49:08,332 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 50 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:08,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 450 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:49:08,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-26 00:49:08,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2022-11-26 00:49:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 75 states have internal predecessors, (88), 16 states have call successors, (16), 7 states have call predecessors, (16), 10 states have return successors, (22), 15 states have call predecessors, (22), 15 states have call successors, (22) [2022-11-26 00:49:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 126 transitions. [2022-11-26 00:49:08,359 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 126 transitions. Word has length 45 [2022-11-26 00:49:08,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:08,361 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 126 transitions. [2022-11-26 00:49:08,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-26 00:49:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 126 transitions. [2022-11-26 00:49:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-26 00:49:08,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:08,366 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:08,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:08,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:08,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:08,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-26 00:49:08,973 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:49:08,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash -129370264, now seen corresponding path program 1 times [2022-11-26 00:49:08,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:49:08,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839586288] [2022-11-26 00:49:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:08,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:49:08,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:49:08,975 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:49:08,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-26 00:49:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:09,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-26 00:49:09,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:49:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:49:09,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:49:09,852 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:49:09,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839586288] [2022-11-26 00:49:09,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839586288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:49:09,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:49:09,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-26 00:49:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405091832] [2022-11-26 00:49:09,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:49:09,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-26 00:49:09,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:49:09,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-26 00:49:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-26 00:49:09,855 INFO L87 Difference]: Start difference. First operand 98 states and 126 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-26 00:49:11,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:11,525 INFO L93 Difference]: Finished difference Result 134 states and 173 transitions. [2022-11-26 00:49:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:49:11,526 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2022-11-26 00:49:11,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:11,527 INFO L225 Difference]: With dead ends: 134 [2022-11-26 00:49:11,527 INFO L226 Difference]: Without dead ends: 127 [2022-11-26 00:49:11,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-26 00:49:11,529 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 34 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:11,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 581 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-26 00:49:11,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-26 00:49:11,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 100. [2022-11-26 00:49:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 76 states have internal predecessors, (90), 16 states have call successors, (16), 7 states have call predecessors, (16), 10 states have return successors, (22), 16 states have call predecessors, (22), 15 states have call successors, (22) [2022-11-26 00:49:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 128 transitions. [2022-11-26 00:49:11,554 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 128 transitions. Word has length 45 [2022-11-26 00:49:11,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:11,560 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 128 transitions. [2022-11-26 00:49:11,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-26 00:49:11,560 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 128 transitions. [2022-11-26 00:49:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-26 00:49:11,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:11,562 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:11,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:11,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:49:11,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:49:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:11,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1582626122, now seen corresponding path program 1 times [2022-11-26 00:49:11,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:49:11,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015660044] [2022-11-26 00:49:11,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:11,763 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:49:11,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:49:11,765 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:49:11,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-26 00:49:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:11,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:49:11,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:49:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-26 00:49:12,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:49:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:49:12,639 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-26 00:49:12,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015660044] [2022-11-26 00:49:12,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015660044] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:49:12,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [188398850] [2022-11-26 00:49:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:12,639 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-26 00:49:12,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-26 00:49:12,641 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-26 00:49:12,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-26 00:49:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:49:12,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-26 00:49:12,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:49:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-26 00:49:13,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:49:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-26 00:49:15,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [188398850] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-26 00:49:15,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:49:15,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8, 7] total 18 [2022-11-26 00:49:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412184671] [2022-11-26 00:49:15,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:49:15,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:49:15,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-26 00:49:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:49:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-11-26 00:49:15,177 INFO L87 Difference]: Start difference. First operand 100 states and 128 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-26 00:49:16,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:49:16,153 INFO L93 Difference]: Finished difference Result 171 states and 224 transitions. [2022-11-26 00:49:16,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:49:16,158 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), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2022-11-26 00:49:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:49:16,159 INFO L225 Difference]: With dead ends: 171 [2022-11-26 00:49:16,159 INFO L226 Difference]: Without dead ends: 143 [2022-11-26 00:49:16,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:49:16,161 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 82 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:49:16,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 327 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:49:16,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-26 00:49:16,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 138. [2022-11-26 00:49:16,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 105 states have internal predecessors, (123), 24 states have call successors, (24), 8 states have call predecessors, (24), 14 states have return successors, (34), 24 states have call predecessors, (34), 23 states have call successors, (34) [2022-11-26 00:49:16,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 181 transitions. [2022-11-26 00:49:16,184 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 181 transitions. Word has length 50 [2022-11-26 00:49:16,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:49:16,184 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 181 transitions. [2022-11-26 00:49:16,184 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), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-26 00:49:16,185 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 181 transitions. [2022-11-26 00:49:16,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-26 00:49:16,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:49:16,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:16,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:16,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-26 00:49:16,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-26 00:49:16,599 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:49:16,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:49:16,600 INFO L85 PathProgramCache]: Analyzing trace with hash -981125120, now seen corresponding path program 1 times [2022-11-26 00:49:16,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-26 00:49:16,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516991660] [2022-11-26 00:49:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:49:16,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:49:16,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat [2022-11-26 00:49:16,601 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-26 00:49:16,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:49:16,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:49:16,662 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:49:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:49:16,740 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-26 00:49:16,741 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:49:16,742 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-26 00:49:16,743 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-26 00:49:16,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -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 [2022-11-26 00:49:16,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-26 00:49:16,947 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:49:16,950 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:49:16,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:49:16 BoogieIcfgContainer [2022-11-26 00:49:16,988 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:49:16,989 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:49:16,989 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:49:16,989 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:49:16,989 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:43:39" (3/4) ... [2022-11-26 00:49:16,991 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-26 00:49:17,075 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:49:17,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:49:17,076 INFO L158 Benchmark]: Toolchain (without parser) took 341636.04ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 34.2MB in the beginning and 50.4MB in the end (delta: -16.2MB). Peak memory consumption was 1.7MB. Max. memory is 16.1GB. [2022-11-26 00:49:17,076 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 62.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:49:17,076 INFO L158 Benchmark]: CACSL2BoogieTranslator took 550.80ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 34.0MB in the beginning and 54.1MB in the end (delta: -20.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2022-11-26 00:49:17,077 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.43ms. Allocated memory is still 79.7MB. Free memory was 54.1MB in the beginning and 52.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:49:17,077 INFO L158 Benchmark]: Boogie Preprocessor took 41.91ms. Allocated memory is still 79.7MB. Free memory was 52.3MB in the beginning and 50.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:49:17,080 INFO L158 Benchmark]: RCFGBuilder took 2918.29ms. Allocated memory is still 79.7MB. Free memory was 50.3MB in the beginning and 55.3MB in the end (delta: -5.1MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. [2022-11-26 00:49:17,080 INFO L158 Benchmark]: TraceAbstraction took 337977.45ms. Allocated memory is still 79.7MB. Free memory was 54.8MB in the beginning and 53.9MB in the end (delta: 851.1kB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2022-11-26 00:49:17,081 INFO L158 Benchmark]: Witness Printer took 86.45ms. Allocated memory is still 79.7MB. Free memory was 53.9MB in the beginning and 50.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:49:17,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 62.9MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 550.80ms. Allocated memory was 62.9MB in the beginning and 79.7MB in the end (delta: 16.8MB). Free memory was 34.0MB in the beginning and 54.1MB in the end (delta: -20.1MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.43ms. Allocated memory is still 79.7MB. Free memory was 54.1MB in the beginning and 52.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.91ms. Allocated memory is still 79.7MB. Free memory was 52.3MB in the beginning and 50.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2918.29ms. Allocated memory is still 79.7MB. Free memory was 50.3MB in the beginning and 55.3MB in the end (delta: -5.1MB). Peak memory consumption was 15.1MB. Max. memory is 16.1GB. * TraceAbstraction took 337977.45ms. Allocated memory is still 79.7MB. Free memory was 54.8MB in the beginning and 53.9MB in the end (delta: 851.1kB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. * Witness Printer took 86.45ms. Allocated memory is still 79.7MB. Free memory was 53.9MB in the beginning and 50.4MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 60]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L309] COND FALSE !(__VERIFIER_nondet_int()) [L312] CALL main2() [L269] unsigned int a ; [L270] unsigned int ma = __VERIFIER_nondet_uint(); [L271] signed char ea = __VERIFIER_nondet_char(); [L272] unsigned int b ; [L273] unsigned int mb = __VERIFIER_nondet_uint(); [L274] signed char eb = __VERIFIER_nondet_char(); [L275] unsigned int r_add1 ; [L276] unsigned int r_add2 ; [L277] unsigned int zero ; [L278] int tmp ; [L279] int tmp___0 ; [L280] int __retres14 ; [L284] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L72] COND TRUE ! m [L73] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L284] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0] [L284] zero = base2flt(0, 0) [L285] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L100] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=2147483648, e=0, m=0, res=2147483648] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-2147483648, __retres4=2147483648, e=0, m=0, res=2147483648] [L285] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=-2147483648, ea=0, ma=16777216, zero=0] [L285] a = base2flt(ma, ea) [L286] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=64, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L100] COND TRUE 1 VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=64, \old(m)=16777216, __retres4=3221225472, e=64, m=0, res=3221225472] [L123] return (__retres4); VAL [\old(e)=64, \old(m)=16777216, \result=-1073741824, __retres4=3221225472, e=64, m=0, res=3221225472] [L286] RET, EXPR base2flt(mb, eb) VAL [a=2147483648, base2flt(mb, eb)=-1073741824, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L286] b = base2flt(mb, eb) [L287] CALL addflt(a, b) VAL [\old(a)=2147483648, \old(b)=3221225472] [L127] unsigned int res ; [L128] unsigned int ma ; [L129] unsigned int mb ; [L130] unsigned int delta ; [L131] int ea ; [L132] int eb ; [L133] unsigned int tmp ; [L134] unsigned int __retres10 ; VAL [\old(a)=2147483648, \old(b)=3221225472, a=2147483648, b=3221225472] [L137] COND TRUE a < b [L138] tmp = a [L139] a = b [L140] b = tmp VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, tmp=2147483648] [L144] COND FALSE !(! b) [L151] ma = a & ((1U << 24U) - 1U) [L152] ea = (int )(a >> 24U) - 128 [L153] ma = ma | (1U << 24U) [L154] mb = b & ((1U << 24U) - 1U) [L155] eb = (int )(b >> 24U) - 128 [L156] mb = mb | (1U << 24U) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L157] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L59] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L157] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L158] delta = ea - eb VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, delta=64, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L159] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L59] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L60] reach_error() VAL [\old(cond)=0, cond=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: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 337.9s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 167.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 mSolverCounterUnknown, 364 SdHoareTripleChecker+Valid, 158.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 340 mSDsluCounter, 3699 SdHoareTripleChecker+Invalid, 158.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 73 IncrementalHoareTripleChecker+Unchecked, 2980 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 735 IncrementalHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 719 mSDtfsCounter, 735 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 980 GetRequests, 887 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 40.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=10, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 122 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 81.6s SatisfiabilityAnalysisTime, 83.5s InterpolantComputationTime, 640 NumberOfCodeBlocks, 622 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 952 ConstructedInterpolants, 4 QuantifiedInterpolants, 1781 SizeOfPredicates, 49 NumberOfNonLiveVariables, 1200 ConjunctsInSsa, 122 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 375/424 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 proved your program to be incorrect! [2022-11-26 00:49:17,311 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-26 00:49:17,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4c009edc-af09-4ad9-9fe1-1538ccf8bf4d/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE