./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1-2a.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_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/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_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/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_22effc98-b196-4214-b734-c6537b01235f/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 c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 22:49:47,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 22:49:47,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 22:49:47,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 22:49:47,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 22:49:47,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 22:49:47,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 22:49:47,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 22:49:47,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 22:49:47,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 22:49:47,565 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 22:49:47,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 22:49:47,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 22:49:47,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 22:49:47,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 22:49:47,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 22:49:47,573 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 22:49:47,574 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 22:49:47,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 22:49:47,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 22:49:47,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 22:49:47,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 22:49:47,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 22:49:47,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 22:49:47,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 22:49:47,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 22:49:47,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 22:49:47,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 22:49:47,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 22:49:47,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 22:49:47,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 22:49:47,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 22:49:47,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 22:49:47,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 22:49:47,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 22:49:47,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 22:49:47,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 22:49:47,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 22:49:47,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 22:49:47,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 22:49:47,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 22:49:47,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-20 22:49:47,660 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 22:49:47,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 22:49:47,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 22:49:47,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 22:49:47,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 22:49:47,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 22:49:47,662 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 22:49:47,662 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 22:49:47,663 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 22:49:47,663 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 22:49:47,663 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 22:49:47,663 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 22:49:47,663 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 22:49:47,664 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 22:49:47,664 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 22:49:47,664 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 22:49:47,664 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 22:49:47,665 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 22:49:47,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 22:49:47,666 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 22:49:47,666 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 22:49:47,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 22:49:47,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 22:49:47,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 22:49:47,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 22:49:47,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 22:49:47,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 22:49:47,668 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-20 22:49:47,668 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 22:49:47,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 22:49:47,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 22:49:47,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 22:49:47,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 22:49:47,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 22:49:47,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:49:47,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 22:49:47,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 22:49:47,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 22:49:47,670 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 22:49:47,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 22:49:47,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 22:49:47,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 22:49:47,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 22:49:47,672 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_22effc98-b196-4214-b734-c6537b01235f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ff936057be59b0f479a8c37fd17409fe797633e9a8a05703f5728379735d91 [2021-11-20 22:49:48,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 22:49:48,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 22:49:48,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 22:49:48,063 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 22:49:48,064 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 22:49:48,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-20 22:49:48,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/data/5bc23cc30/d606b5e5910845f18defa2d49be398e5/FLAGf6268388a [2021-11-20 22:49:48,662 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 22:49:48,663 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c [2021-11-20 22:49:48,673 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/data/5bc23cc30/d606b5e5910845f18defa2d49be398e5/FLAGf6268388a [2021-11-20 22:49:49,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/data/5bc23cc30/d606b5e5910845f18defa2d49be398e5 [2021-11-20 22:49:49,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 22:49:49,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 22:49:49,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 22:49:49,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 22:49:49,054 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 22:49:49,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d6a7c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49, skipping insertion in model container [2021-11-20 22:49:49,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 22:49:49,113 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 22:49:49,283 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_22effc98-b196-4214-b734-c6537b01235f/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-20 22:49:49,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:49:49,364 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 22:49:49,397 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_22effc98-b196-4214-b734-c6537b01235f/sv-benchmarks/c/bitvector/soft_float_1-2a.c.cil.c[755,768] [2021-11-20 22:49:49,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 22:49:49,507 INFO L208 MainTranslator]: Completed translation [2021-11-20 22:49:49,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49 WrapperNode [2021-11-20 22:49:49,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 22:49:49,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 22:49:49,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 22:49:49,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 22:49:49,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,583 INFO L137 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 158 [2021-11-20 22:49:49,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 22:49:49,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 22:49:49,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 22:49:49,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 22:49:49,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 22:49:49,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 22:49:49,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 22:49:49,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 22:49:49,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (1/1) ... [2021-11-20 22:49:49,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 22:49:49,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:49:49,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 22:49:49,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 22:49:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 22:49:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 22:49:49,756 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-11-20 22:49:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-11-20 22:49:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 22:49:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 22:49:49,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 22:49:49,757 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 22:49:49,824 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 22:49:49,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 22:49:50,183 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 22:49:50,393 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 22:49:50,393 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 22:49:50,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:50 BoogieIcfgContainer [2021-11-20 22:49:50,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 22:49:50,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 22:49:50,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 22:49:50,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 22:49:50,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:49:49" (1/3) ... [2021-11-20 22:49:50,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e47a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:50, skipping insertion in model container [2021-11-20 22:49:50,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:49:49" (2/3) ... [2021-11-20 22:49:50,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e47a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:49:50, skipping insertion in model container [2021-11-20 22:49:50,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:50" (3/3) ... [2021-11-20 22:49:50,411 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_1-2a.c.cil.c [2021-11-20 22:49:50,416 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 22:49:50,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-20 22:49:50,516 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 22:49:50,531 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 [2021-11-20 22:49:50,531 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-20 22:49:50,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 45 states have (on average 1.711111111111111) internal successors, (77), 63 states have internal predecessors, (77), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 22:49:50,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 22:49:50,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:50,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:50,588 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:50,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:50,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1187746787, now seen corresponding path program 1 times [2021-11-20 22:49:50,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:50,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516873205] [2021-11-20 22:49:50,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:50,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:49:50,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:50,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516873205] [2021-11-20 22:49:50,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516873205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:50,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:50,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 22:49:50,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604489808] [2021-11-20 22:49:50,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:50,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 22:49:50,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:50,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 22:49:50,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 22:49:50,882 INFO L87 Difference]: Start difference. First operand has 72 states, 45 states have (on average 1.711111111111111) internal successors, (77), 63 states have internal predecessors, (77), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-20 22:49:50,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:50,983 INFO L93 Difference]: Finished difference Result 140 states and 186 transitions. [2021-11-20 22:49:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 22:49:50,987 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 [2021-11-20 22:49:50,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:51,006 INFO L225 Difference]: With dead ends: 140 [2021-11-20 22:49:51,006 INFO L226 Difference]: Without dead ends: 58 [2021-11-20 22:49:51,012 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 [2021-11-20 22:49:51,018 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:51,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 79 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:49:51,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-20 22:49:51,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-20 22:49:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.5405405405405406) internal successors, (57), 50 states have internal predecessors, (57), 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) [2021-11-20 22:49:51,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-11-20 22:49:51,083 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 8 [2021-11-20 22:49:51,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:51,084 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-11-20 22:49:51,084 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) [2021-11-20 22:49:51,085 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-11-20 22:49:51,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 22:49:51,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:51,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:51,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 22:49:51,088 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:51,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:51,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1188917732, now seen corresponding path program 1 times [2021-11-20 22:49:51,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:51,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039191479] [2021-11-20 22:49:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:51,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:49:51,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:51,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039191479] [2021-11-20 22:49:51,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039191479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:51,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:51,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:49:51,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87578991] [2021-11-20 22:49:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:51,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:49:51,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:51,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:49:51,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:49:51,191 INFO L87 Difference]: Start difference. First operand 58 states and 67 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) [2021-11-20 22:49:51,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:51,303 INFO L93 Difference]: Finished difference Result 152 states and 184 transitions. [2021-11-20 22:49:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:49:51,308 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 [2021-11-20 22:49:51,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:51,311 INFO L225 Difference]: With dead ends: 152 [2021-11-20 22:49:51,312 INFO L226 Difference]: Without dead ends: 96 [2021-11-20 22:49:51,313 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 [2021-11-20 22:49:51,315 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 53 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:51,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 153 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:49:51,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-11-20 22:49:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 88. [2021-11-20 22:49:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 66 states have (on average 1.5) internal successors, (99), 79 states have internal predecessors, (99), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 22:49:51,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 109 transitions. [2021-11-20 22:49:51,349 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 109 transitions. Word has length 8 [2021-11-20 22:49:51,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:51,350 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 109 transitions. [2021-11-20 22:49:51,350 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) [2021-11-20 22:49:51,350 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 109 transitions. [2021-11-20 22:49:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 22:49:51,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:51,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:51,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 22:49:51,357 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:51,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:51,358 INFO L85 PathProgramCache]: Analyzing trace with hash 718339619, now seen corresponding path program 1 times [2021-11-20 22:49:51,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:51,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950823161] [2021-11-20 22:49:51,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:51,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:51,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:49:51,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:51,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950823161] [2021-11-20 22:49:51,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950823161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:51,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:51,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:49:51,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687739116] [2021-11-20 22:49:51,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:51,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:49:51,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:51,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:49:51,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:49:51,451 INFO L87 Difference]: Start difference. First operand 88 states and 109 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-20 22:49:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:51,589 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2021-11-20 22:49:51,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:49:51,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 12 [2021-11-20 22:49:51,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:51,592 INFO L225 Difference]: With dead ends: 104 [2021-11-20 22:49:51,592 INFO L226 Difference]: Without dead ends: 102 [2021-11-20 22:49:51,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:49:51,595 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 66 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:51,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 204 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:49:51,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-20 22:49:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 90. [2021-11-20 22:49:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.4705882352941178) internal successors, (100), 81 states have internal predecessors, (100), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 22:49:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2021-11-20 22:49:51,616 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 110 transitions. Word has length 12 [2021-11-20 22:49:51,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:51,619 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 110 transitions. [2021-11-20 22:49:51,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-20 22:49:51,620 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 110 transitions. [2021-11-20 22:49:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 22:49:51,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:51,625 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:51,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 22:49:51,626 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:51,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:51,627 INFO L85 PathProgramCache]: Analyzing trace with hash -119909001, now seen corresponding path program 1 times [2021-11-20 22:49:51,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:51,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212239098] [2021-11-20 22:49:51,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:51,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:51,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:49:51,698 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:51,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212239098] [2021-11-20 22:49:51,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212239098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:51,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:51,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:49:51,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408957689] [2021-11-20 22:49:51,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:51,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:49:51,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:51,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:49:51,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:49:51,702 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-20 22:49:51,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:51,827 INFO L93 Difference]: Finished difference Result 127 states and 157 transitions. [2021-11-20 22:49:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:49:51,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 14 [2021-11-20 22:49:51,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:51,829 INFO L225 Difference]: With dead ends: 127 [2021-11-20 22:49:51,829 INFO L226 Difference]: Without dead ends: 124 [2021-11-20 22:49:51,830 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 [2021-11-20 22:49:51,832 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 81 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:51,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 163 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:49:51,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-20 22:49:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 111. [2021-11-20 22:49:51,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 101 states have internal predecessors, (130), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 22:49:51,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 140 transitions. [2021-11-20 22:49:51,849 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 140 transitions. Word has length 14 [2021-11-20 22:49:51,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:51,850 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 140 transitions. [2021-11-20 22:49:51,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-20 22:49:51,850 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 140 transitions. [2021-11-20 22:49:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 22:49:51,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:51,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:51,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 22:49:51,852 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:51,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash 793691810, now seen corresponding path program 1 times [2021-11-20 22:49:51,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:51,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765039487] [2021-11-20 22:49:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:51,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:51,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:49:51,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765039487] [2021-11-20 22:49:51,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765039487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:51,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:51,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:49:51,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664529349] [2021-11-20 22:49:51,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:51,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:49:51,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:51,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:49:51,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:49:51,951 INFO L87 Difference]: Start difference. First operand 111 states and 140 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-20 22:49:52,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:52,064 INFO L93 Difference]: Finished difference Result 209 states and 257 transitions. [2021-11-20 22:49:52,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:49:52,065 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 13 [2021-11-20 22:49:52,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:52,067 INFO L225 Difference]: With dead ends: 209 [2021-11-20 22:49:52,067 INFO L226 Difference]: Without dead ends: 130 [2021-11-20 22:49:52,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:49:52,070 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 76 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:52,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 206 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:49:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-20 22:49:52,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 114. [2021-11-20 22:49:52,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 92 states have (on average 1.4456521739130435) internal successors, (133), 104 states have internal predecessors, (133), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 22:49:52,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 143 transitions. [2021-11-20 22:49:52,088 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 143 transitions. Word has length 13 [2021-11-20 22:49:52,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:52,088 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 143 transitions. [2021-11-20 22:49:52,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-20 22:49:52,089 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 143 transitions. [2021-11-20 22:49:52,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 22:49:52,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:52,090 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:52,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 22:49:52,091 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:52,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash 577788322, now seen corresponding path program 1 times [2021-11-20 22:49:52,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:52,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57966394] [2021-11-20 22:49:52,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:52,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 22:49:52,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:52,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57966394] [2021-11-20 22:49:52,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57966394] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:52,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:52,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 22:49:52,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995678271] [2021-11-20 22:49:52,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:52,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 22:49:52,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:52,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 22:49:52,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:49:52,133 INFO L87 Difference]: Start difference. First operand 114 states and 143 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-20 22:49:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:52,178 INFO L93 Difference]: Finished difference Result 120 states and 149 transitions. [2021-11-20 22:49:52,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 22:49:52,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 15 [2021-11-20 22:49:52,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:52,183 INFO L225 Difference]: With dead ends: 120 [2021-11-20 22:49:52,184 INFO L226 Difference]: Without dead ends: 119 [2021-11-20 22:49:52,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 22:49:52,196 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:52,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 108 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 22:49:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-11-20 22:49:52,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2021-11-20 22:49:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 90 states have (on average 1.4222222222222223) internal successors, (128), 101 states have internal predecessors, (128), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 22:49:52,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 138 transitions. [2021-11-20 22:49:52,232 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 138 transitions. Word has length 15 [2021-11-20 22:49:52,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:52,235 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 138 transitions. [2021-11-20 22:49:52,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2021-11-20 22:49:52,238 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 138 transitions. [2021-11-20 22:49:52,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 22:49:52,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:52,239 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:52,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 22:49:52,239 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:52,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:52,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1510957708, now seen corresponding path program 1 times [2021-11-20 22:49:52,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:52,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472781392] [2021-11-20 22:49:52,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:52,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:52,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:49:52,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:52,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472781392] [2021-11-20 22:49:52,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472781392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:49:52,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408590574] [2021-11-20 22:49:52,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:52,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:49:52,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:49:52,285 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:49:52,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 22:49:52,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:52,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 22:49:52,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:49:52,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:49:52,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 22:49:52,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408590574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:52,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 22:49:52,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-20 22:49:52,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992643408] [2021-11-20 22:49:52,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:52,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:49:52,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:52,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:49:52,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:49:52,493 INFO L87 Difference]: Start difference. First operand 111 states and 138 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-20 22:49:52,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:52,537 INFO L93 Difference]: Finished difference Result 133 states and 165 transitions. [2021-11-20 22:49:52,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:49:52,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 14 [2021-11-20 22:49:52,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:52,539 INFO L225 Difference]: With dead ends: 133 [2021-11-20 22:49:52,539 INFO L226 Difference]: Without dead ends: 132 [2021-11-20 22:49:52,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:49:52,541 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:52,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 117 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 22:49:52,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-20 22:49:52,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 109. [2021-11-20 22:49:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.4090909090909092) internal successors, (124), 99 states have internal predecessors, (124), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 22:49:52,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 134 transitions. [2021-11-20 22:49:52,554 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 134 transitions. Word has length 14 [2021-11-20 22:49:52,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:52,555 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 134 transitions. [2021-11-20 22:49:52,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-20 22:49:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 134 transitions. [2021-11-20 22:49:52,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 22:49:52,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:52,557 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:52,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 22:49:52,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-20 22:49:52,771 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:52,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:52,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1619016927, now seen corresponding path program 1 times [2021-11-20 22:49:52,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:52,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306282272] [2021-11-20 22:49:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:52,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 22:49:52,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:52,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306282272] [2021-11-20 22:49:52,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306282272] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:52,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:52,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:49:52,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183390366] [2021-11-20 22:49:52,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:52,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:49:52,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:52,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:49:52,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:49:52,857 INFO L87 Difference]: Start difference. First operand 109 states and 134 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-20 22:49:52,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:52,971 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2021-11-20 22:49:52,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:49:52,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 16 [2021-11-20 22:49:52,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:52,973 INFO L225 Difference]: With dead ends: 126 [2021-11-20 22:49:52,973 INFO L226 Difference]: Without dead ends: 124 [2021-11-20 22:49:52,974 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 [2021-11-20 22:49:52,975 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 69 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:52,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 162 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:49:52,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-20 22:49:52,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2021-11-20 22:49:52,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 91 states have (on average 1.3846153846153846) internal successors, (126), 102 states have internal predecessors, (126), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 22:49:52,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 136 transitions. [2021-11-20 22:49:52,989 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 136 transitions. Word has length 16 [2021-11-20 22:49:52,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:52,990 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 136 transitions. [2021-11-20 22:49:52,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-11-20 22:49:52,991 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 136 transitions. [2021-11-20 22:49:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 22:49:52,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:52,992 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:52,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 22:49:52,993 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:52,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:52,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2068814548, now seen corresponding path program 1 times [2021-11-20 22:49:52,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:52,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874742833] [2021-11-20 22:49:52,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:52,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 22:49:53,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:53,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874742833] [2021-11-20 22:49:53,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874742833] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:53,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:53,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:49:53,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186720601] [2021-11-20 22:49:53,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:53,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:49:53,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:49:53,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:49:53,041 INFO L87 Difference]: Start difference. First operand 112 states and 136 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-20 22:49:53,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:53,148 INFO L93 Difference]: Finished difference Result 124 states and 149 transitions. [2021-11-20 22:49:53,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:49:53,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 20 [2021-11-20 22:49:53,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:53,150 INFO L225 Difference]: With dead ends: 124 [2021-11-20 22:49:53,150 INFO L226 Difference]: Without dead ends: 122 [2021-11-20 22:49:53,151 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 [2021-11-20 22:49:53,156 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 75 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:53,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 158 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:49:53,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-20 22:49:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2021-11-20 22:49:53,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 87 states have (on average 1.367816091954023) internal successors, (119), 96 states have internal predecessors, (119), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 22:49:53,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 129 transitions. [2021-11-20 22:49:53,174 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 129 transitions. Word has length 20 [2021-11-20 22:49:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:53,175 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 129 transitions. [2021-11-20 22:49:53,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-11-20 22:49:53,176 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 129 transitions. [2021-11-20 22:49:53,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-20 22:49:53,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:53,180 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:53,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 22:49:53,181 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:53,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:53,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1503944743, now seen corresponding path program 1 times [2021-11-20 22:49:53,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:53,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113494186] [2021-11-20 22:49:53,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:53,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 22:49:53,231 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:53,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113494186] [2021-11-20 22:49:53,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113494186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:53,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:53,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 22:49:53,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073050663] [2021-11-20 22:49:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:53,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 22:49:53,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:53,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 22:49:53,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 22:49:53,234 INFO L87 Difference]: Start difference. First operand 106 states and 129 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-20 22:49:53,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:53,295 INFO L93 Difference]: Finished difference Result 129 states and 154 transitions. [2021-11-20 22:49:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 22:49:53,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 19 [2021-11-20 22:49:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:53,297 INFO L225 Difference]: With dead ends: 129 [2021-11-20 22:49:53,297 INFO L226 Difference]: Without dead ends: 128 [2021-11-20 22:49:53,298 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 [2021-11-20 22:49:53,299 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:53,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 22:49:53,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-20 22:49:53,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 103. [2021-11-20 22:49:53,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 84 states have (on average 1.3571428571428572) internal successors, (114), 93 states have internal predecessors, (114), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-20 22:49:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 124 transitions. [2021-11-20 22:49:53,309 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 124 transitions. Word has length 19 [2021-11-20 22:49:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:53,310 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 124 transitions. [2021-11-20 22:49:53,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-11-20 22:49:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 124 transitions. [2021-11-20 22:49:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 22:49:53,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:53,312 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:53,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 22:49:53,312 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:53,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:53,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1874232476, now seen corresponding path program 1 times [2021-11-20 22:49:53,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:53,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302836829] [2021-11-20 22:49:53,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:53,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 22:49:53,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:53,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302836829] [2021-11-20 22:49:53,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302836829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:53,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:53,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 22:49:53,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092835052] [2021-11-20 22:49:53,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:53,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 22:49:53,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:53,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 22:49:53,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-20 22:49:53,449 INFO L87 Difference]: Start difference. First operand 103 states and 124 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 22:49:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:53,541 INFO L93 Difference]: Finished difference Result 165 states and 191 transitions. [2021-11-20 22:49:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 22:49:53,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-11-20 22:49:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:53,544 INFO L225 Difference]: With dead ends: 165 [2021-11-20 22:49:53,544 INFO L226 Difference]: Without dead ends: 137 [2021-11-20 22:49:53,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 22:49:53,546 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 25 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:53,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 370 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:49:53,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-20 22:49:53,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2021-11-20 22:49:53,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 98 states have internal predecessors, (117), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-20 22:49:53,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 131 transitions. [2021-11-20 22:49:53,558 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 131 transitions. Word has length 22 [2021-11-20 22:49:53,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:53,559 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 131 transitions. [2021-11-20 22:49:53,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 22:49:53,559 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 131 transitions. [2021-11-20 22:49:53,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-20 22:49:53,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:53,561 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:53,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 22:49:53,561 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:53,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:53,562 INFO L85 PathProgramCache]: Analyzing trace with hash 448372476, now seen corresponding path program 1 times [2021-11-20 22:49:53,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:53,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785621811] [2021-11-20 22:49:53,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:53,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 22:49:53,602 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:53,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785621811] [2021-11-20 22:49:53,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785621811] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:49:53,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:49:53,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 22:49:53,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378661127] [2021-11-20 22:49:53,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:49:53,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 22:49:53,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:49:53,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 22:49:53,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 22:49:53,605 INFO L87 Difference]: Start difference. First operand 109 states and 131 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-20 22:49:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:49:53,683 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2021-11-20 22:49:53,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:49:53,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 22 [2021-11-20 22:49:53,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:49:53,686 INFO L225 Difference]: With dead ends: 122 [2021-11-20 22:49:53,686 INFO L226 Difference]: Without dead ends: 120 [2021-11-20 22:49:53,687 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 [2021-11-20 22:49:53,688 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 65 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:49:53,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 157 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:49:53,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-20 22:49:53,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 104. [2021-11-20 22:49:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 84 states have (on average 1.3333333333333333) internal successors, (112), 93 states have internal predecessors, (112), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2021-11-20 22:49:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2021-11-20 22:49:53,700 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 126 transitions. Word has length 22 [2021-11-20 22:49:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:49:53,701 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 126 transitions. [2021-11-20 22:49:53,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-20 22:49:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 126 transitions. [2021-11-20 22:49:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-20 22:49:53,702 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:49:53,703 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:49:53,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 22:49:53,703 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:49:53,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:49:53,704 INFO L85 PathProgramCache]: Analyzing trace with hash 60548045, now seen corresponding path program 1 times [2021-11-20 22:49:53,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:49:53,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956816935] [2021-11-20 22:49:53,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:53,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:49:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 22:49:53,984 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:49:53,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956816935] [2021-11-20 22:49:53,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956816935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:49:53,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703335322] [2021-11-20 22:49:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:49:53,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:49:53,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:49:53,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:49:54,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 22:49:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:49:54,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 22:49:54,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:49:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 22:49:54,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:49:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 22:49:54,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703335322] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:49:54,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2058227163] [2021-11-20 22:49:54,588 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-20 22:49:54,588 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 22:49:54,594 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 22:49:54,599 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 22:49:54,600 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 22:49:57,334 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 60 for LOIs [2021-11-20 22:49:58,123 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 22:50:00,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [2058227163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:00,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:50:00,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [8, 9, 7] total 31 [2021-11-20 22:50:00,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889084760] [2021-11-20 22:50:00,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:00,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 22:50:00,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:00,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 22:50:00,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2021-11-20 22:50:00,227 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. Second operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 22:50:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:02,546 INFO L93 Difference]: Finished difference Result 229 states and 283 transitions. [2021-11-20 22:50:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-20 22:50:02,547 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2021-11-20 22:50:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:02,549 INFO L225 Difference]: With dead ends: 229 [2021-11-20 22:50:02,549 INFO L226 Difference]: Without dead ends: 227 [2021-11-20 22:50:02,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2021-11-20 22:50:02,551 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 249 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:02,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 237 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 22:50:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-11-20 22:50:02,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 132. [2021-11-20 22:50:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 104 states have (on average 1.3076923076923077) internal successors, (136), 117 states have internal predecessors, (136), 9 states have call successors, (9), 4 states have call predecessors, (9), 11 states have return successors, (24), 10 states have call predecessors, (24), 9 states have call successors, (24) [2021-11-20 22:50:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 169 transitions. [2021-11-20 22:50:02,588 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 169 transitions. Word has length 26 [2021-11-20 22:50:02,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:02,589 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 169 transitions. [2021-11-20 22:50:02,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-20 22:50:02,589 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 169 transitions. [2021-11-20 22:50:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 22:50:02,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:02,593 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:50:02,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 22:50:02,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:50:02,811 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:50:02,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:02,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1062547703, now seen corresponding path program 1 times [2021-11-20 22:50:02,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:02,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458863851] [2021-11-20 22:50:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:02,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:03,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 22:50:03,026 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:03,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458863851] [2021-11-20 22:50:03,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458863851] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:50:03,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467298517] [2021-11-20 22:50:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:03,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:50:03,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:50:03,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:50:03,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 22:50:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:03,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 22:50:03,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:50:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-20 22:50:03,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:50:03,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-20 22:50:03,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467298517] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 22:50:03,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [320180255] [2021-11-20 22:50:03,688 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-20 22:50:03,688 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 22:50:03,689 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 22:50:03,689 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 22:50:03,689 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 22:50:05,854 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 60 for LOIs [2021-11-20 22:50:06,764 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 22:50:08,437 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 22:50:08,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 22:50:08,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 17 [2021-11-20 22:50:08,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891712671] [2021-11-20 22:50:08,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 22:50:08,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-20 22:50:08,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:08,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-20 22:50:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1015, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 22:50:08,440 INFO L87 Difference]: Start difference. First operand 132 states and 169 transitions. Second operand has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 22:50:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:08,873 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2021-11-20 22:50:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 22:50:08,874 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 28 [2021-11-20 22:50:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:08,875 INFO L225 Difference]: With dead ends: 248 [2021-11-20 22:50:08,875 INFO L226 Difference]: Without dead ends: 106 [2021-11-20 22:50:08,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2021-11-20 22:50:08,878 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 24 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:08,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 530 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 22:50:08,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-20 22:50:08,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 92. [2021-11-20 22:50:08,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 80 states have internal predecessors, (92), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2021-11-20 22:50:08,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2021-11-20 22:50:08,890 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 28 [2021-11-20 22:50:08,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:08,891 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2021-11-20 22:50:08,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 3 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2021-11-20 22:50:08,891 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2021-11-20 22:50:08,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 22:50:08,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:08,892 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:50:08,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 22:50:09,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:50:09,117 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:50:09,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:09,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1909646632, now seen corresponding path program 1 times [2021-11-20 22:50:09,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:09,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502704614] [2021-11-20 22:50:09,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:09,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 22:50:09,288 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:09,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502704614] [2021-11-20 22:50:09,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502704614] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:50:09,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728684714] [2021-11-20 22:50:09,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:09,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 22:50:09,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 22:50:09,291 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 22:50:09,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 22:50:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:09,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-20 22:50:09,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 22:50:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 22:50:09,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 22:50:21,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728684714] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 22:50:21,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [598456203] [2021-11-20 22:50:21,348 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2021-11-20 22:50:21,349 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 22:50:21,349 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 22:50:21,349 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 22:50:21,350 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 22:50:23,470 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 60 for LOIs [2021-11-20 22:50:24,209 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-20 22:50:28,992 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-20 22:50:28,992 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 22:50:28,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-11-20 22:50:28,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209508254] [2021-11-20 22:50:28,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 22:50:28,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 22:50:28,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:28,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 22:50:28,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=513, Unknown=3, NotChecked=0, Total=600 [2021-11-20 22:50:28,995 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 22:50:29,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:29,155 INFO L93 Difference]: Finished difference Result 124 states and 145 transitions. [2021-11-20 22:50:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 22:50:29,156 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2021-11-20 22:50:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:29,157 INFO L225 Difference]: With dead ends: 124 [2021-11-20 22:50:29,157 INFO L226 Difference]: Without dead ends: 123 [2021-11-20 22:50:29,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=97, Invalid=602, Unknown=3, NotChecked=0, Total=702 [2021-11-20 22:50:29,159 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 86 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:29,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 322 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:50:29,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-20 22:50:29,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 100. [2021-11-20 22:50:29,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 86 states have internal predecessors, (98), 7 states have call successors, (7), 4 states have call predecessors, (7), 7 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-20 22:50:29,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2021-11-20 22:50:29,171 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 32 [2021-11-20 22:50:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:29,172 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2021-11-20 22:50:29,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-20 22:50:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2021-11-20 22:50:29,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 22:50:29,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:29,173 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:50:29,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 22:50:29,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-20 22:50:29,388 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:50:29,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash 435860520, now seen corresponding path program 2 times [2021-11-20 22:50:29,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:29,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694376486] [2021-11-20 22:50:29,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:29,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:29,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 22:50:29,624 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-20 22:50:29,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 22:50:29,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694376486] [2021-11-20 22:50:29,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694376486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 22:50:29,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 22:50:29,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 22:50:29,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329847857] [2021-11-20 22:50:29,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 22:50:29,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 22:50:29,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 22:50:29,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 22:50:29,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 22:50:29,630 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 22:50:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 22:50:29,728 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2021-11-20 22:50:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 22:50:29,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-11-20 22:50:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 22:50:29,730 INFO L225 Difference]: With dead ends: 132 [2021-11-20 22:50:29,730 INFO L226 Difference]: Without dead ends: 131 [2021-11-20 22:50:29,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 22:50:29,731 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 23 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 22:50:29,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 324 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 22:50:29,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-11-20 22:50:29,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 102. [2021-11-20 22:50:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 88 states have internal predecessors, (99), 7 states have call successors, (7), 4 states have call predecessors, (7), 8 states have return successors, (15), 9 states have call predecessors, (15), 7 states have call successors, (15) [2021-11-20 22:50:29,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2021-11-20 22:50:29,749 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 32 [2021-11-20 22:50:29,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 22:50:29,749 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2021-11-20 22:50:29,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-20 22:50:29,750 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2021-11-20 22:50:29,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 22:50:29,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 22:50:29,750 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:50:29,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 22:50:29,751 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-11-20 22:50:29,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 22:50:29,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1219382986, now seen corresponding path program 1 times [2021-11-20 22:50:29,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 22:50:29,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742569060] [2021-11-20 22:50:29,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 22:50:29,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 22:50:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 22:50:29,787 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 22:50:29,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 22:50:29,849 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-20 22:50:29,850 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 22:50:29,851 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2021-11-20 22:50:29,853 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2021-11-20 22:50:29,854 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2021-11-20 22:50:29,854 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2021-11-20 22:50:29,854 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2021-11-20 22:50:29,854 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2021-11-20 22:50:29,854 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2021-11-20 22:50:29,855 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2021-11-20 22:50:29,855 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2021-11-20 22:50:29,855 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2021-11-20 22:50:29,855 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2021-11-20 22:50:29,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2021-11-20 22:50:29,856 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2021-11-20 22:50:29,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2021-11-20 22:50:29,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2021-11-20 22:50:29,857 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2021-11-20 22:50:29,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 22:50:29,861 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 22:50:29,866 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 22:50:29,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:50:29 BoogieIcfgContainer [2021-11-20 22:50:29,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 22:50:29,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 22:50:29,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 22:50:29,917 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 22:50:29,918 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:49:50" (3/4) ... [2021-11-20 22:50:29,921 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 22:50:29,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 22:50:29,922 INFO L158 Benchmark]: Toolchain (without parser) took 40876.89ms. Allocated memory was 88.1MB in the beginning and 197.1MB in the end (delta: 109.1MB). Free memory was 68.0MB in the beginning and 139.1MB in the end (delta: -71.1MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2021-11-20 22:50:29,922 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory was 64.0MB in the beginning and 63.9MB in the end (delta: 79.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 22:50:29,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.63ms. Allocated memory is still 88.1MB. Free memory was 67.7MB in the beginning and 60.4MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 22:50:29,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.90ms. Allocated memory is still 88.1MB. Free memory was 60.4MB in the beginning and 58.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 22:50:29,924 INFO L158 Benchmark]: Boogie Preprocessor took 73.94ms. Allocated memory is still 88.1MB. Free memory was 58.5MB in the beginning and 56.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 22:50:29,924 INFO L158 Benchmark]: RCFGBuilder took 735.80ms. Allocated memory is still 88.1MB. Free memory was 56.8MB in the beginning and 33.8MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-20 22:50:29,926 INFO L158 Benchmark]: TraceAbstraction took 39517.29ms. Allocated memory was 88.1MB in the beginning and 197.1MB in the end (delta: 109.1MB). Free memory was 33.5MB in the beginning and 139.1MB in the end (delta: -105.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. [2021-11-20 22:50:29,926 INFO L158 Benchmark]: Witness Printer took 4.58ms. Allocated memory is still 197.1MB. Free memory is still 139.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 22:50:29,927 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 88.1MB. Free memory was 64.0MB in the beginning and 63.9MB in the end (delta: 79.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.63ms. Allocated memory is still 88.1MB. Free memory was 67.7MB in the beginning and 60.4MB in the end (delta: 7.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.90ms. Allocated memory is still 88.1MB. Free memory was 60.4MB in the beginning and 58.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.94ms. Allocated memory is still 88.1MB. Free memory was 58.5MB in the beginning and 56.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 735.80ms. Allocated memory is still 88.1MB. Free memory was 56.8MB in the beginning and 33.8MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 39517.29ms. Allocated memory was 88.1MB in the beginning and 197.1MB in the end (delta: 109.1MB). Free memory was 33.5MB in the beginning and 139.1MB in the end (delta: -105.6MB). Peak memory consumption was 5.7MB. Max. memory is 16.1GB. * Witness Printer took 4.58ms. Allocated memory is still 197.1MB. Free memory is still 139.1MB. 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: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 111, overapproximation of bitwiseAnd at line 112. Possible FailurePath: [L227] unsigned int a ; [L228] unsigned int ma = __VERIFIER_nondet_uint(); [L229] signed char ea = __VERIFIER_nondet_char(); [L230] unsigned int b ; [L231] unsigned int mb = __VERIFIER_nondet_uint(); [L232] signed char eb = __VERIFIER_nondet_char(); [L233] unsigned int r_add ; [L234] unsigned int zero ; [L235] int sa ; [L236] int sb ; [L237] int tmp ; [L238] int tmp___0 ; [L239] int tmp___1 ; [L240] int tmp___2 ; [L241] int tmp___3 ; [L242] int tmp___4 ; [L243] int tmp___5 ; [L244] int tmp___6 ; [L245] int tmp___7 ; [L246] int tmp___8 ; [L247] int tmp___9 ; [L248] int __retres23 ; VAL [ea=127, eb=0] [L252] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L30] COND TRUE ! m [L31] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L81] return (__retres4); [L252] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=0] [L252] zero = base2flt(0, 0) [L253] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L30] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L58] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L60] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L65] COND TRUE e >= 127 [L66] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L81] return (__retres4); [L253] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=0, ma=33554432, zero=0] [L253] a = base2flt(ma, ea) [L254] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=0, \old(m)=16777216] [L26] unsigned int res ; [L27] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L30] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L36] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L58] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L60] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L77] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0] [L78] EXPR e + 128 [L78] res = m | ((unsigned int ) (e + 128) << 24U) [L79] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=2147483647, e=0, res=2147483647] [L81] return (__retres4); [L254] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=36028799166447615, ea=127, eb=0, ma=33554432, mb=16777216, zero=0] [L254] b = base2flt(mb, eb) [L256] COND FALSE !(a < zero) [L259] COND TRUE a > zero [L260] tmp = 1 [L264] sa = tmp [L266] COND FALSE !(b < zero) [L269] COND TRUE b > zero [L270] tmp___0 = 1 [L274] sb = tmp___0 [L277] CALL addflt(a, b) [L85] unsigned int res ; [L86] unsigned int ma ; [L87] unsigned int mb ; [L88] unsigned int delta ; [L89] int ea ; [L90] int eb ; [L91] unsigned int tmp ; [L92] unsigned int __retres10 ; [L95] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=2147483647, a=4294967295, b=2147483647, tmp=4294967295] [L102] COND FALSE !(! b) [L109] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=2147483647, a=4294967295, b=2147483647, tmp=4294967295] [L110] EXPR (int )(a >> 24U) - 128 [L110] ea = (int )(a >> 24U) - 128 [L111] ma = ma | (1U << 24U) [L112] mb = b & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=2147483647, a=4294967295, b=2147483647, ea=127, tmp=4294967295] [L113] (int )(b >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=2147483647, a=4294967295, b=2147483647, ea=127, tmp=4294967295] - UnprovableResult [Line: 46]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 46]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 71]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 78]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 110]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 110]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 113]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 116]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 134]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 142]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 142]: 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, 72 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 39.3s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 957 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 911 mSDsluCounter, 3447 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2811 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1458 IncrementalHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 861 mSDtfsCounter, 1458 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 346 GetRequests, 194 SyntacticMatches, 3 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 15.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=13, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 16 MinimizatonAttempts, 338 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 435 NumberOfCodeBlocks, 435 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 433 ConstructedInterpolants, 0 QuantifiedInterpolants, 1237 SizeOfPredicates, 26 NumberOfNonLiveVariables, 367 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 127/157 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: OVERALL_TIME: 3.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 22, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 23, TOOLS_POST_TIME: 1.8s, TOOLS_POST_CALL_APPLICATIONS: 9, TOOLS_POST_CALL_TIME: 0.8s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.7s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 38, TOOLS_QUANTIFIERELIM_TIME: 3.3s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 55, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 11, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 22, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 1, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 190, DAG_COMPRESSION_RETAINED_NODES: 51, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 22:50:29,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22effc98-b196-4214-b734-c6537b01235f/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_22effc98-b196-4214-b734-c6537b01235f/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