./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dd739e073fd22ceb2879e867de327b334b7eea402e53d4a8f9e32eed7e4110d8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:19:41,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:19:41,937 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:19:41,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:19:41,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:19:41,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:19:41,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:19:41,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:19:41,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:19:41,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:19:41,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:19:42,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:19:42,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:19:42,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:19:42,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:19:42,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:19:42,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:19:42,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:19:42,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:19:42,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:19:42,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:19:42,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:19:42,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:19:42,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:19:42,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:19:42,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:19:42,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:19:42,051 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:19:42,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:19:42,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:19:42,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:19:42,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:19:42,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:19:42,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:19:42,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:19:42,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:19:42,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:19:42,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:19:42,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:19:42,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:19:42,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:19:42,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-21 00:19:42,103 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:19:42,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:19:42,104 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:19:42,104 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:19:42,105 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:19:42,105 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:19:42,105 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:19:42,106 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:19:42,106 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:19:42,106 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:19:42,106 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:19:42,106 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:19:42,107 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:19:42,107 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:19:42,107 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:19:42,107 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:19:42,107 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:19:42,108 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:19:42,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:19:42,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:19:42,109 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:19:42,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:19:42,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:19:42,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:19:42,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:19:42,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:19:42,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:19:42,110 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 00:19:42,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:19:42,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:19:42,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:19:42,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:19:42,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:19:42,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:19:42,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:19:42,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:19:42,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:19:42,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:19:42,112 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:19:42,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:19:42,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:19:42,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:19:42,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:19:42,113 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dd739e073fd22ceb2879e867de327b334b7eea402e53d4a8f9e32eed7e4110d8 [2021-11-21 00:19:42,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:19:42,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:19:42,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:19:42,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:19:42,408 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:19:42,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/bitvector/soft_float_5.c.cil.c [2021-11-21 00:19:42,509 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/data/70ae73bbd/c3a8b2e8dae3499d96c58699ed2857dc/FLAG9157f47d9 [2021-11-21 00:19:43,061 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:19:43,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/sv-benchmarks/c/bitvector/soft_float_5.c.cil.c [2021-11-21 00:19:43,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/data/70ae73bbd/c3a8b2e8dae3499d96c58699ed2857dc/FLAG9157f47d9 [2021-11-21 00:19:43,420 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/data/70ae73bbd/c3a8b2e8dae3499d96c58699ed2857dc [2021-11-21 00:19:43,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:19:43,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:19:43,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:19:43,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:19:43,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:19:43,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6862e876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43, skipping insertion in model container [2021-11-21 00:19:43,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:19:43,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:19:43,688 WARN L230 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_55acb34e-1d6c-4501-8674-1d4569887b5c/sv-benchmarks/c/bitvector/soft_float_5.c.cil.c[727,740] [2021-11-21 00:19:43,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:19:43,750 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:19:43,763 WARN L230 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_55acb34e-1d6c-4501-8674-1d4569887b5c/sv-benchmarks/c/bitvector/soft_float_5.c.cil.c[727,740] [2021-11-21 00:19:43,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:19:43,835 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:19:43,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43 WrapperNode [2021-11-21 00:19:43,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:19:43,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:19:43,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:19:43,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:19:43,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,883 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,917 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 126 [2021-11-21 00:19:43,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:19:43,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:19:43,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:19:43,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:19:43,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:19:43,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:19:43,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:19:43,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:19:43,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (1/1) ... [2021-11-21 00:19:43,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:19:43,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:44,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:19:44,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:19:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:19:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:19:44,061 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-21 00:19:44,061 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-21 00:19:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:19:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:19:44,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:19:44,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:19:44,168 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:19:44,170 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:19:44,551 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:19:44,619 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:19:44,619 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-21 00:19:44,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:19:44 BoogieIcfgContainer [2021-11-21 00:19:44,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:19:44,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:19:44,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:19:44,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:19:44,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:19:43" (1/3) ... [2021-11-21 00:19:44,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122a5cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:19:44, skipping insertion in model container [2021-11-21 00:19:44,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:19:43" (2/3) ... [2021-11-21 00:19:44,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122a5cda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:19:44, skipping insertion in model container [2021-11-21 00:19:44,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:19:44" (3/3) ... [2021-11-21 00:19:44,635 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_5.c.cil.c [2021-11-21 00:19:44,640 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:19:44,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-11-21 00:19:44,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:19:44,698 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 00:19:44,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2021-11-21 00:19:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 72 states have internal predecessors, (86), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-21 00:19:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:19:44,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:44,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:44,724 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:44,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:44,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1527469092, now seen corresponding path program 1 times [2021-11-21 00:19:44,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:44,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822124027] [2021-11-21 00:19:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:44,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:19:44,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:44,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822124027] [2021-11-21 00:19:44,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822124027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:44,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:44,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:19:44,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99535922] [2021-11-21 00:19:44,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:44,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-21 00:19:44,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:44,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-21 00:19:44,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:19:44,917 INFO L87 Difference]: Start difference. First operand has 79 states, 49 states have (on average 1.7551020408163265) internal successors, (86), 72 states have internal predecessors, (86), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:44,993 INFO L93 Difference]: Finished difference Result 154 states and 193 transitions. [2021-11-21 00:19:44,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-21 00:19:44,995 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 00:19:44,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:45,005 INFO L225 Difference]: With dead ends: 154 [2021-11-21 00:19:45,005 INFO L226 Difference]: Without dead ends: 70 [2021-11-21 00:19:45,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-21 00:19:45,013 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:45,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:19:45,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-21 00:19:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-11-21 00:19:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 45 states have (on average 1.5777777777777777) internal successors, (71), 64 states have internal predecessors, (71), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 79 transitions. [2021-11-21 00:19:45,061 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 79 transitions. Word has length 8 [2021-11-21 00:19:45,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:45,061 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 79 transitions. [2021-11-21 00:19:45,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:45,062 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 79 transitions. [2021-11-21 00:19:45,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:19:45,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:45,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:45,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:19:45,064 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:45,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1528571806, now seen corresponding path program 1 times [2021-11-21 00:19:45,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:45,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684248969] [2021-11-21 00:19:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:45,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:19:45,124 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:45,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684248969] [2021-11-21 00:19:45,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684248969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:45,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:45,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:19:45,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523311191] [2021-11-21 00:19:45,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:45,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:19:45,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:45,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:19:45,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:19:45,128 INFO L87 Difference]: Start difference. First operand 70 states and 79 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:45,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:45,291 INFO L93 Difference]: Finished difference Result 182 states and 216 transitions. [2021-11-21 00:19:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:19:45,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 00:19:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:45,299 INFO L225 Difference]: With dead ends: 182 [2021-11-21 00:19:45,299 INFO L226 Difference]: Without dead ends: 114 [2021-11-21 00:19:45,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:45,302 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 59 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:45,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 186 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:19:45,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-21 00:19:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2021-11-21 00:19:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 77 states have (on average 1.5324675324675325) internal successors, (118), 96 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:45,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 126 transitions. [2021-11-21 00:19:45,335 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 126 transitions. Word has length 8 [2021-11-21 00:19:45,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:45,335 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 126 transitions. [2021-11-21 00:19:45,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:45,336 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 126 transitions. [2021-11-21 00:19:45,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:19:45,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:45,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:45,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:19:45,338 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:45,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash -696163945, now seen corresponding path program 1 times [2021-11-21 00:19:45,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:45,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761124429] [2021-11-21 00:19:45,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:45,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:19:45,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:45,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761124429] [2021-11-21 00:19:45,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761124429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:45,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:45,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:19:45,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689532782] [2021-11-21 00:19:45,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:45,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:19:45,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:45,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:19:45,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:19:45,432 INFO L87 Difference]: Start difference. First operand 103 states and 126 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:45,525 INFO L93 Difference]: Finished difference Result 208 states and 254 transitions. [2021-11-21 00:19:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:19:45,530 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 00:19:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:45,531 INFO L225 Difference]: With dead ends: 208 [2021-11-21 00:19:45,531 INFO L226 Difference]: Without dead ends: 107 [2021-11-21 00:19:45,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:45,535 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 5 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:45,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 206 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:19:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-21 00:19:45,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2021-11-21 00:19:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 80 states have (on average 1.5125) internal successors, (121), 99 states have internal predecessors, (121), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2021-11-21 00:19:45,551 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 11 [2021-11-21 00:19:45,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:45,551 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2021-11-21 00:19:45,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:19:45,552 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2021-11-21 00:19:45,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 00:19:45,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:45,553 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:45,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:19:45,558 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:45,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash -422632162, now seen corresponding path program 1 times [2021-11-21 00:19:45,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:45,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705335740] [2021-11-21 00:19:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:45,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:45,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:19:45,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:45,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705335740] [2021-11-21 00:19:45,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705335740] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:45,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:45,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:19:45,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498861451] [2021-11-21 00:19:45,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:45,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:19:45,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:45,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:19:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:19:45,683 INFO L87 Difference]: Start difference. First operand 107 states and 129 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:19:45,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:45,745 INFO L93 Difference]: Finished difference Result 186 states and 213 transitions. [2021-11-21 00:19:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:19:45,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-21 00:19:45,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:45,753 INFO L225 Difference]: With dead ends: 186 [2021-11-21 00:19:45,753 INFO L226 Difference]: Without dead ends: 99 [2021-11-21 00:19:45,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:45,756 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 29 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:45,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 205 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:19:45,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-21 00:19:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2021-11-21 00:19:45,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 66 states have (on average 1.5151515151515151) internal successors, (100), 85 states have internal predecessors, (100), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:45,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2021-11-21 00:19:45,776 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 17 [2021-11-21 00:19:45,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:45,777 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2021-11-21 00:19:45,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:19:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2021-11-21 00:19:45,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 00:19:45,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:45,778 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:45,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:19:45,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:45,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:45,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1579311810, now seen corresponding path program 1 times [2021-11-21 00:19:45,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:45,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664941172] [2021-11-21 00:19:45,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:45,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:19:45,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:45,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664941172] [2021-11-21 00:19:45,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664941172] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:45,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:45,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:19:45,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176380948] [2021-11-21 00:19:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:45,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:19:45,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:45,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:19:45,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:45,883 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:19:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:45,996 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-11-21 00:19:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:19:45,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-21 00:19:45,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:46,001 INFO L225 Difference]: With dead ends: 101 [2021-11-21 00:19:46,002 INFO L226 Difference]: Without dead ends: 98 [2021-11-21 00:19:46,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:19:46,012 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 41 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:46,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 244 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:19:46,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-21 00:19:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 93. [2021-11-21 00:19:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 85 states have internal predecessors, (97), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2021-11-21 00:19:46,028 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 18 [2021-11-21 00:19:46,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:46,028 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2021-11-21 00:19:46,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:19:46,029 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2021-11-21 00:19:46,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:19:46,029 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:46,029 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:46,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-21 00:19:46,030 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:46,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:46,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1714025955, now seen corresponding path program 1 times [2021-11-21 00:19:46,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:46,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788062060] [2021-11-21 00:19:46,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:46,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:19:46,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:46,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788062060] [2021-11-21 00:19:46,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788062060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:46,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:46,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:19:46,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118835393] [2021-11-21 00:19:46,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:46,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:19:46,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:19:46,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:46,122 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:19:46,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:46,234 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2021-11-21 00:19:46,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:19:46,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-21 00:19:46,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:46,236 INFO L225 Difference]: With dead ends: 178 [2021-11-21 00:19:46,236 INFO L226 Difference]: Without dead ends: 110 [2021-11-21 00:19:46,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:19:46,242 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 51 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:46,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 249 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:19:46,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-21 00:19:46,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 103. [2021-11-21 00:19:46,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 95 states have internal predecessors, (108), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:46,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2021-11-21 00:19:46,262 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 19 [2021-11-21 00:19:46,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:46,263 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2021-11-21 00:19:46,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:19:46,263 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2021-11-21 00:19:46,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-21 00:19:46,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:46,264 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:46,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 00:19:46,265 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:46,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1661136747, now seen corresponding path program 1 times [2021-11-21 00:19:46,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:46,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102129076] [2021-11-21 00:19:46,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:46,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:19:46,332 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:46,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102129076] [2021-11-21 00:19:46,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102129076] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:46,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:46,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:19:46,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041096760] [2021-11-21 00:19:46,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:46,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:19:46,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:46,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:19:46,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:19:46,334 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:19:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:46,402 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2021-11-21 00:19:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:19:46,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-21 00:19:46,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:46,405 INFO L225 Difference]: With dead ends: 116 [2021-11-21 00:19:46,405 INFO L226 Difference]: Without dead ends: 113 [2021-11-21 00:19:46,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:19:46,411 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 10 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:46,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 183 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:19:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-21 00:19:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 100. [2021-11-21 00:19:46,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 92 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:46,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2021-11-21 00:19:46,443 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 24 [2021-11-21 00:19:46,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:46,444 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2021-11-21 00:19:46,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-21 00:19:46,444 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2021-11-21 00:19:46,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-21 00:19:46,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:46,446 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:46,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-21 00:19:46,446 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:46,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:46,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1696207923, now seen corresponding path program 1 times [2021-11-21 00:19:46,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:46,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144659838] [2021-11-21 00:19:46,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:46,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:46,520 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:19:46,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:46,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144659838] [2021-11-21 00:19:46,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144659838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:46,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:46,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:19:46,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892302943] [2021-11-21 00:19:46,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:46,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:19:46,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:46,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:19:46,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:46,525 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:46,616 INFO L93 Difference]: Finished difference Result 144 states and 167 transitions. [2021-11-21 00:19:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:19:46,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2021-11-21 00:19:46,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:46,618 INFO L225 Difference]: With dead ends: 144 [2021-11-21 00:19:46,619 INFO L226 Difference]: Without dead ends: 141 [2021-11-21 00:19:46,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:19:46,620 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 102 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:46,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 187 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:19:46,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-21 00:19:46,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 128. [2021-11-21 00:19:46,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 102 states have (on average 1.411764705882353) internal successors, (144), 119 states have internal predecessors, (144), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 152 transitions. [2021-11-21 00:19:46,650 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 152 transitions. Word has length 31 [2021-11-21 00:19:46,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:46,650 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 152 transitions. [2021-11-21 00:19:46,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:46,651 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 152 transitions. [2021-11-21 00:19:46,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-21 00:19:46,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:46,652 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:46,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-21 00:19:46,653 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:46,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1375758923, now seen corresponding path program 1 times [2021-11-21 00:19:46,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:46,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315572896] [2021-11-21 00:19:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:46,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-21 00:19:46,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:46,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315572896] [2021-11-21 00:19:46,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315572896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:46,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:46,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-21 00:19:46,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545038705] [2021-11-21 00:19:46,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:46,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:19:46,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:46,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:19:46,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:46,698 INFO L87 Difference]: Start difference. First operand 128 states and 152 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:46,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:46,788 INFO L93 Difference]: Finished difference Result 139 states and 159 transitions. [2021-11-21 00:19:46,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:19:46,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-11-21 00:19:46,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:46,790 INFO L225 Difference]: With dead ends: 139 [2021-11-21 00:19:46,790 INFO L226 Difference]: Without dead ends: 136 [2021-11-21 00:19:46,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:19:46,791 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 83 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:46,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 203 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:19:46,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-21 00:19:46,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 123. [2021-11-21 00:19:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 97 states have (on average 1.3917525773195876) internal successors, (135), 114 states have internal predecessors, (135), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:46,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2021-11-21 00:19:46,808 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 33 [2021-11-21 00:19:46,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:46,810 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2021-11-21 00:19:46,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2021-11-21 00:19:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 00:19:46,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:46,818 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:19:46,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-21 00:19:46,818 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:46,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:46,819 INFO L85 PathProgramCache]: Analyzing trace with hash 303239756, now seen corresponding path program 1 times [2021-11-21 00:19:46,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:46,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992561812] [2021-11-21 00:19:46,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:46,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:46,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:46,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992561812] [2021-11-21 00:19:46,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992561812] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:19:46,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:19:46,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 00:19:46,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023653544] [2021-11-21 00:19:46,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:19:46,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:19:46,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:19:46,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:19:46,935 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:47,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:47,014 INFO L93 Difference]: Finished difference Result 284 states and 331 transitions. [2021-11-21 00:19:47,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:19:47,014 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2021-11-21 00:19:47,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:47,017 INFO L225 Difference]: With dead ends: 284 [2021-11-21 00:19:47,017 INFO L226 Difference]: Without dead ends: 184 [2021-11-21 00:19:47,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:19:47,018 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 54 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:47,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 217 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:19:47,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-21 00:19:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 123. [2021-11-21 00:19:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 97 states have (on average 1.3814432989690721) internal successors, (134), 114 states have internal predecessors, (134), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:47,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2021-11-21 00:19:47,032 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 34 [2021-11-21 00:19:47,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:47,032 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2021-11-21 00:19:47,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:19:47,033 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2021-11-21 00:19:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-21 00:19:47,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:47,038 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:19:47,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-21 00:19:47,038 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:47,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1996538871, now seen corresponding path program 1 times [2021-11-21 00:19:47,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:47,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060391753] [2021-11-21 00:19:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:47,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:47,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:47,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060391753] [2021-11-21 00:19:47,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060391753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:19:47,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288925783] [2021-11-21 00:19:47,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:47,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:47,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:47,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:19:47,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:19:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:47,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:19:47,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:47,352 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:47,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:19:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:47,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288925783] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:19:47,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1611825272] [2021-11-21 00:19:47,679 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-21 00:19:47,689 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:19:47,693 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:19:47,713 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:19:47,714 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:19:49,423 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2021-11-21 00:19:50,713 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:19:51,532 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:19:51,532 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:19:51,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-11-21 00:19:51,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741372395] [2021-11-21 00:19:51,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:19:51,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:19:51,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:19:51,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2021-11-21 00:19:51,535 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 00:19:51,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:51,970 INFO L93 Difference]: Finished difference Result 463 states and 545 transitions. [2021-11-21 00:19:51,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-21 00:19:51,971 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2021-11-21 00:19:51,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:51,974 INFO L225 Difference]: With dead ends: 463 [2021-11-21 00:19:51,974 INFO L226 Difference]: Without dead ends: 366 [2021-11-21 00:19:51,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=362, Invalid=1278, Unknown=0, NotChecked=0, Total=1640 [2021-11-21 00:19:51,977 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 182 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:51,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 360 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:19:51,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-11-21 00:19:51,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 143. [2021-11-21 00:19:51,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 117 states have (on average 1.3504273504273505) internal successors, (158), 134 states have internal predecessors, (158), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2021-11-21 00:19:52,001 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 36 [2021-11-21 00:19:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:52,002 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2021-11-21 00:19:52,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 00:19:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2021-11-21 00:19:52,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-21 00:19:52,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:52,003 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:52,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:19:52,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:52,220 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:52,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2138646588, now seen corresponding path program 1 times [2021-11-21 00:19:52,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:52,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344352141] [2021-11-21 00:19:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:52,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:52,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:52,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344352141] [2021-11-21 00:19:52,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344352141] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:19:52,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677565848] [2021-11-21 00:19:52,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:52,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:52,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:52,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:19:52,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:19:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:52,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:19:52,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:52,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:19:52,729 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:52,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677565848] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:19:52,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1575349198] [2021-11-21 00:19:52,734 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-21 00:19:52,734 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:19:52,734 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:19:52,735 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:19:52,735 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:19:54,125 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2021-11-21 00:19:55,792 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:19:56,555 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:19:56,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:19:56,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2021-11-21 00:19:56,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636105133] [2021-11-21 00:19:56,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:19:56,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 00:19:56,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:19:56,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 00:19:56,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2021-11-21 00:19:56,558 INFO L87 Difference]: Start difference. First operand 143 states and 166 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:19:57,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:19:57,314 INFO L93 Difference]: Finished difference Result 380 states and 445 transitions. [2021-11-21 00:19:57,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-21 00:19:57,318 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2021-11-21 00:19:57,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:19:57,321 INFO L225 Difference]: With dead ends: 380 [2021-11-21 00:19:57,322 INFO L226 Difference]: Without dead ends: 273 [2021-11-21 00:19:57,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2021-11-21 00:19:57,324 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 146 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:19:57,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 400 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:19:57,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-21 00:19:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 143. [2021-11-21 00:19:57,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 117 states have (on average 1.3162393162393162) internal successors, (154), 134 states have internal predecessors, (154), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:19:57,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 162 transitions. [2021-11-21 00:19:57,340 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 162 transitions. Word has length 39 [2021-11-21 00:19:57,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:19:57,340 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 162 transitions. [2021-11-21 00:19:57,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:19:57,341 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 162 transitions. [2021-11-21 00:19:57,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-21 00:19:57,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:19:57,343 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:19:57,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:19:57,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-21 00:19:57,566 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:19:57,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:19:57,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1401608695, now seen corresponding path program 2 times [2021-11-21 00:19:57,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:19:57,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081395205] [2021-11-21 00:19:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:19:57,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:19:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:19:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:57,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:19:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081395205] [2021-11-21 00:19:57,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081395205] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:19:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072801216] [2021-11-21 00:19:57,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:19:57,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:19:57,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:19:57,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:19:57,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:19:57,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 00:19:57,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:19:57,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:19:57,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:19:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:58,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:19:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:19:58,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072801216] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:19:58,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [338236987] [2021-11-21 00:19:58,567 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-21 00:19:58,568 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:19:58,568 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:19:58,569 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:19:58,569 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:19:59,811 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2021-11-21 00:20:00,884 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:20:01,537 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:20:01,537 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:20:01,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-11-21 00:20:01,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247118129] [2021-11-21 00:20:01,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:20:01,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-21 00:20:01,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:20:01,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-21 00:20:01,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=428, Invalid=1378, Unknown=0, NotChecked=0, Total=1806 [2021-11-21 00:20:01,540 INFO L87 Difference]: Start difference. First operand 143 states and 162 transitions. Second operand has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 states have internal predecessors, (123), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 00:20:02,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:20:02,418 INFO L93 Difference]: Finished difference Result 751 states and 893 transitions. [2021-11-21 00:20:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-21 00:20:02,418 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 states have internal predecessors, (123), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2021-11-21 00:20:02,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:20:02,424 INFO L225 Difference]: With dead ends: 751 [2021-11-21 00:20:02,425 INFO L226 Difference]: Without dead ends: 654 [2021-11-21 00:20:02,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=980, Invalid=2680, Unknown=0, NotChecked=0, Total=3660 [2021-11-21 00:20:02,428 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 521 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 00:20:02,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 359 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 00:20:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-11-21 00:20:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 183. [2021-11-21 00:20:02,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 157 states have (on average 1.286624203821656) internal successors, (202), 174 states have internal predecessors, (202), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:20:02,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 210 transitions. [2021-11-21 00:20:02,457 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 210 transitions. Word has length 56 [2021-11-21 00:20:02,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:20:02,457 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 210 transitions. [2021-11-21 00:20:02,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.730769230769231) internal successors, (123), 26 states have internal predecessors, (123), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 00:20:02,458 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 210 transitions. [2021-11-21 00:20:02,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-21 00:20:02,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:20:02,460 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:20:02,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:20:02,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-21 00:20:02,670 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:20:02,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:20:02,671 INFO L85 PathProgramCache]: Analyzing trace with hash -373489212, now seen corresponding path program 2 times [2021-11-21 00:20:02,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:20:02,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011549162] [2021-11-21 00:20:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:20:02,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:20:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:20:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:20:02,890 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:20:02,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011549162] [2021-11-21 00:20:02,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011549162] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:20:02,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329151366] [2021-11-21 00:20:02,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:20:02,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:20:02,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:20:02,893 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:20:02,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:20:03,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-21 00:20:03,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:20:03,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:20:03,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:20:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:20:03,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:20:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:20:03,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329151366] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:20:03,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [505927478] [2021-11-21 00:20:03,912 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-21 00:20:03,912 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:20:03,913 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:20:03,913 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:20:03,913 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:20:05,270 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2021-11-21 00:20:06,482 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:20:07,226 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:20:07,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:20:07,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2021-11-21 00:20:07,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619303290] [2021-11-21 00:20:07,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:20:07,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-21 00:20:07,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:20:07,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-21 00:20:07,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1195, Unknown=0, NotChecked=0, Total=1482 [2021-11-21 00:20:07,229 INFO L87 Difference]: Start difference. First operand 183 states and 210 transitions. Second operand has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:20:27,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:20:27,584 INFO L93 Difference]: Finished difference Result 548 states and 649 transitions. [2021-11-21 00:20:27,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-21 00:20:27,590 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 59 [2021-11-21 00:20:27,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:20:27,593 INFO L225 Difference]: With dead ends: 548 [2021-11-21 00:20:27,594 INFO L226 Difference]: Without dead ends: 441 [2021-11-21 00:20:27,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=614, Invalid=2033, Unknown=5, NotChecked=0, Total=2652 [2021-11-21 00:20:27,596 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 411 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:20:27,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 927 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 00:20:27,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-21 00:20:27,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 183. [2021-11-21 00:20:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 157 states have (on average 1.2356687898089171) internal successors, (194), 174 states have internal predecessors, (194), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:20:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 202 transitions. [2021-11-21 00:20:27,626 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 202 transitions. Word has length 59 [2021-11-21 00:20:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:20:27,627 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 202 transitions. [2021-11-21 00:20:27,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.04) internal successors, (126), 25 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:20:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 202 transitions. [2021-11-21 00:20:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-21 00:20:27,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:20:27,629 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:20:27,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:20:27,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-21 00:20:27,834 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:20:27,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:20:27,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2053768695, now seen corresponding path program 3 times [2021-11-21 00:20:27,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:20:27,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140543838] [2021-11-21 00:20:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:20:27,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:20:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:20:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 8 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:20:28,134 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:20:28,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140543838] [2021-11-21 00:20:28,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140543838] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:20:28,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144450029] [2021-11-21 00:20:28,135 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:20:28,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:20:28,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:20:28,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:20:28,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:20:28,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:20:28,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:20:28,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-21 00:20:28,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:20:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 8 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:20:28,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:20:29,634 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 8 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:20:29,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144450029] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:20:29,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2134035002] [2021-11-21 00:20:29,638 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-21 00:20:29,638 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:20:29,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:20:29,639 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:20:29,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:20:30,681 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2021-11-21 00:20:31,636 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:20:32,451 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:20:32,452 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:20:32,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 50 [2021-11-21 00:20:32,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189569180] [2021-11-21 00:20:32,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:20:32,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-21 00:20:32,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:20:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-21 00:20:32,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1188, Invalid=3234, Unknown=0, NotChecked=0, Total=4422 [2021-11-21 00:20:32,457 INFO L87 Difference]: Start difference. First operand 183 states and 202 transitions. Second operand has 50 states, 50 states have (on average 4.86) internal successors, (243), 50 states have internal predecessors, (243), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 00:20:34,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:20:34,641 INFO L93 Difference]: Finished difference Result 1327 states and 1589 transitions. [2021-11-21 00:20:34,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-21 00:20:34,642 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.86) internal successors, (243), 50 states have internal predecessors, (243), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 96 [2021-11-21 00:20:34,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:20:34,650 INFO L225 Difference]: With dead ends: 1327 [2021-11-21 00:20:34,651 INFO L226 Difference]: Without dead ends: 1230 [2021-11-21 00:20:34,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3883 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3128, Invalid=6972, Unknown=0, NotChecked=0, Total=10100 [2021-11-21 00:20:34,659 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 1364 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:20:34,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 418 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 00:20:34,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2021-11-21 00:20:34,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 263. [2021-11-21 00:20:34,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 237 states have (on average 1.2236286919831223) internal successors, (290), 254 states have internal predecessors, (290), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:20:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 298 transitions. [2021-11-21 00:20:34,705 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 298 transitions. Word has length 96 [2021-11-21 00:20:34,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:20:34,706 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 298 transitions. [2021-11-21 00:20:34,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.86) internal successors, (243), 50 states have internal predecessors, (243), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-21 00:20:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 298 transitions. [2021-11-21 00:20:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-21 00:20:34,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:20:34,713 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:20:34,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 00:20:34,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-21 00:20:34,937 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:20:34,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:20:34,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1987990980, now seen corresponding path program 3 times [2021-11-21 00:20:34,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:20:34,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190284110] [2021-11-21 00:20:34,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:20:34,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:20:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:20:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 12 proven. 455 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:20:35,409 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:20:35,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190284110] [2021-11-21 00:20:35,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190284110] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:20:35,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945558601] [2021-11-21 00:20:35,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:20:35,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:20:35,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:20:35,411 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:20:35,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 00:20:35,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:20:35,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:20:35,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-21 00:20:35,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:20:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 12 proven. 455 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:20:36,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:20:38,105 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 12 proven. 455 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 00:20:38,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945558601] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:20:38,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [618733461] [2021-11-21 00:20:38,108 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-21 00:20:38,108 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:20:38,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:20:38,109 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:20:38,109 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:20:39,024 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 22 for LOIs [2021-11-21 00:20:41,602 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:20:42,784 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:20:42,785 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:20:42,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2021-11-21 00:20:42,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830879319] [2021-11-21 00:20:42,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:20:42,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-21 00:20:42,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:20:42,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-21 00:20:42,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=745, Invalid=3161, Unknown=0, NotChecked=0, Total=3906 [2021-11-21 00:20:42,788 INFO L87 Difference]: Start difference. First operand 263 states and 298 transitions. Second operand has 49 states, 49 states have (on average 5.020408163265306) internal successors, (246), 49 states have internal predecessors, (246), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:20:55,490 WARN L227 SmtUtils]: Spent 10.39s on a formula simplification. DAG size of input: 51 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:21:03,350 WARN L227 SmtUtils]: Spent 5.29s on a formula simplification. DAG size of input: 46 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:21:16,332 WARN L227 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 41 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:21:57,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:21:57,415 INFO L93 Difference]: Finished difference Result 794 states and 943 transitions. [2021-11-21 00:21:57,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-21 00:21:57,417 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.020408163265306) internal successors, (246), 49 states have internal predecessors, (246), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 99 [2021-11-21 00:21:57,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:21:57,423 INFO L225 Difference]: With dead ends: 794 [2021-11-21 00:21:57,424 INFO L226 Difference]: Without dead ends: 687 [2021-11-21 00:21:57,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1992 ImplicationChecksByTransitivity, 74.8s TimeCoverageRelationStatistics Valid=1720, Invalid=5579, Unknown=11, NotChecked=0, Total=7310 [2021-11-21 00:21:57,427 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1532 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 2387 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:21:57,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 2387 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 00:21:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-21 00:21:57,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 263. [2021-11-21 00:21:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 237 states have (on average 1.1814345991561181) internal successors, (280), 254 states have internal predecessors, (280), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-21 00:21:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 288 transitions. [2021-11-21 00:21:57,454 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 288 transitions. Word has length 99 [2021-11-21 00:21:57,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:21:57,454 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 288 transitions. [2021-11-21 00:21:57,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.020408163265306) internal successors, (246), 49 states have internal predecessors, (246), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:21:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 288 transitions. [2021-11-21 00:21:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-21 00:21:57,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:21:57,457 INFO L514 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:21:57,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:21:57,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-21 00:21:57,676 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2021-11-21 00:21:57,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:21:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2052546244, now seen corresponding path program 4 times [2021-11-21 00:21:57,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:21:57,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858680103] [2021-11-21 00:21:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:21:57,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:21:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:21:57,706 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-21 00:21:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-21 00:21:57,763 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-21 00:21:57,763 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-21 00:21:57,765 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2021-11-21 00:21:57,767 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2021-11-21 00:21:57,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2021-11-21 00:21:57,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2021-11-21 00:21:57,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2021-11-21 00:21:57,768 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2021-11-21 00:21:57,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2021-11-21 00:21:57,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2021-11-21 00:21:57,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2021-11-21 00:21:57,769 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2021-11-21 00:21:57,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2021-11-21 00:21:57,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2021-11-21 00:21:57,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2021-11-21 00:21:57,770 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2021-11-21 00:21:57,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2021-11-21 00:21:57,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2021-11-21 00:21:57,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2021-11-21 00:21:57,771 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2021-11-21 00:21:57,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2021-11-21 00:21:57,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2021-11-21 00:21:57,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2021-11-21 00:21:57,772 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2021-11-21 00:21:57,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-21 00:21:57,776 INFO L732 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:21:57,780 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-21 00:21:57,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 12:21:57 BoogieIcfgContainer [2021-11-21 00:21:57,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-21 00:21:57,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-21 00:21:57,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-21 00:21:57,900 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-21 00:21:57,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:19:44" (3/4) ... [2021-11-21 00:21:57,903 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-21 00:21:57,903 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-21 00:21:57,905 INFO L158 Benchmark]: Toolchain (without parser) took 134477.85ms. Allocated memory was 81.8MB in the beginning and 146.8MB in the end (delta: 65.0MB). Free memory was 46.8MB in the beginning and 79.9MB in the end (delta: -33.1MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2021-11-21 00:21:57,905 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory was 51.4MB in the beginning and 51.4MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:21:57,906 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.00ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 46.7MB in the beginning and 73.7MB in the end (delta: -27.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 00:21:57,906 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.65ms. Allocated memory is still 100.7MB. Free memory was 73.7MB in the beginning and 72.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:21:57,907 INFO L158 Benchmark]: Boogie Preprocessor took 39.94ms. Allocated memory is still 100.7MB. Free memory was 72.1MB in the beginning and 70.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-21 00:21:57,907 INFO L158 Benchmark]: RCFGBuilder took 663.06ms. Allocated memory is still 100.7MB. Free memory was 70.4MB in the beginning and 52.4MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-11-21 00:21:57,907 INFO L158 Benchmark]: TraceAbstraction took 133274.73ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 51.9MB in the beginning and 79.9MB in the end (delta: -28.0MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-11-21 00:21:57,908 INFO L158 Benchmark]: Witness Printer took 4.11ms. Allocated memory is still 146.8MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:21:57,913 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 81.8MB. Free memory was 51.4MB in the beginning and 51.4MB in the end (delta: 28.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.00ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 46.7MB in the beginning and 73.7MB in the end (delta: -27.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.65ms. Allocated memory is still 100.7MB. Free memory was 73.7MB in the beginning and 72.1MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.94ms. Allocated memory is still 100.7MB. Free memory was 72.1MB in the beginning and 70.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 663.06ms. Allocated memory is still 100.7MB. Free memory was 70.4MB in the beginning and 52.4MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 133274.73ms. Allocated memory was 100.7MB in the beginning and 146.8MB in the end (delta: 46.1MB). Free memory was 51.9MB in the beginning and 79.9MB in the end (delta: -28.0MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. * Witness Printer took 4.11ms. Allocated memory is still 146.8MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 77, overapproximation of bitwiseAnd at line 76. Possible FailurePath: [L221] unsigned int a ; [L222] unsigned int ma = __VERIFIER_nondet_uint(); [L223] signed char ea = __VERIFIER_nondet_char(); [L224] unsigned int b ; [L225] unsigned int mb = __VERIFIER_nondet_uint(); [L226] signed char eb = __VERIFIER_nondet_char(); [L227] unsigned int r_mul ; [L228] unsigned int zero ; [L229] unsigned int one ; [L230] int sb ; [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L234] int __retres16 ; VAL [ea=0, eb=0] [L238] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); [L238] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=0, eb=0] [L238] zero = base2flt(0, 0) [L239] CALL, EXPR base2flt(1, 0) VAL [\old(e)=0, \old(m)=1] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L35] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L47] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24] [L77] EXPR e + 128 VAL [\old(e)=0, \old(m)=1, e=-24] [L77] EXPR (e + 128) << 24U [L77] res = m | (unsigned int )((e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=1, __retres4=16777217, e=-24, res=16777217] [L80] return (__retres4); [L239] RET, EXPR base2flt(1, 0) VAL [base2flt(1, 0)=16777217, ea=0, eb=0, zero=0] [L239] one = base2flt(1, 0) [L240] CALL base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L77] EXPR e + 128 VAL [\old(e)=0, \old(m)=16777216, e=0] [L77] (e + 128) << 24U VAL [\old(e)=0, \old(m)=16777216, e=0] - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 79 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 133.1s, OverallIterations: 17, TraceHistogramMax: 24, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 100.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4596 SdHoareTripleChecker+Valid, 6.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4590 mSDsluCounter, 6816 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6362 mSDsCounter, 1363 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4698 IncrementalHoareTripleChecker+Invalid, 6061 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1363 mSolverCounterUnsat, 1156 mSDtfsCounter, 4698 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1427 GetRequests, 1033 SyntacticMatches, 0 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9150 ImplicationChecksByTransitivity, 101.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=263occurred in iteration=15, InterpolantAutomatonStates: 250, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 16 MinimizatonAttempts, 2602 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 1122 NumberOfCodeBlocks, 1122 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 1330 ConstructedInterpolants, 0 QuantifiedInterpolants, 7254 SizeOfPredicates, 6 NumberOfNonLiveVariables, 939 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 28 InterpolantComputations, 10 PerfectInterpolantSequences, 245/3587 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-21 00:21:58,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/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 No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55acb34e-1d6c-4501-8674-1d4569887b5c/bin/utaipan-TEXQjIfE4P/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample