./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0620b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0620b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2c42a61f78a6f1a62fbe64821c08eae311814302de1dfe9812261f1f96648c5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:32:01,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:32:01,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:32:01,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:32:01,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:32:01,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:32:01,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:32:01,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:32:01,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:32:01,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:32:01,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:32:01,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:32:01,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:32:01,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:32:01,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:32:01,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:32:01,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:32:01,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:32:01,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:32:01,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:32:01,480 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:32:01,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:32:01,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:32:01,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:32:01,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:32:01,484 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:32:01,484 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:32:01,485 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:32:01,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:32:01,486 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:32:01,486 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:32:01,486 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:32:01,487 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:32:01,487 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:32:01,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:32:01,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:32:01,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:32:01,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:32:01,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:32:01,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:32:01,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:32:01,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 23:32:01,517 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:32:01,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:32:01,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:32:01,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:32:01,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:32:01,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:32:01,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:32:01,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:32:01,519 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:32:01,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:32:01,519 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:32:01,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 23:32:01,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:32:01,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:32:01,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:32:01,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:32:01,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:32:01,520 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:32:01,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:32:01,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:32:01,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:32:01,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:32:01,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:32:01,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:32:01,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:32:01,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:32:01,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:32:01,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:32:01,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 23:32:01,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 23:32:01,522 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:32:01,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:32:01,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:32:01,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2c42a61f78a6f1a62fbe64821c08eae311814302de1dfe9812261f1f96648c5 [2021-12-27 23:32:01,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:32:01,778 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:32:01,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:32:01,782 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:32:01,782 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:32:01,784 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0620b.c [2021-12-27 23:32:01,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab68fd61d/1986352c881648269fa941e7933b8514/FLAG4e5a88afe [2021-12-27 23:32:02,235 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:32:02,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0620b.c [2021-12-27 23:32:02,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab68fd61d/1986352c881648269fa941e7933b8514/FLAG4e5a88afe [2021-12-27 23:32:02,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab68fd61d/1986352c881648269fa941e7933b8514 [2021-12-27 23:32:02,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:32:02,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:32:02,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:32:02,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:32:02,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:32:02,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f47638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02, skipping insertion in model container [2021-12-27 23:32:02,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:32:02,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:32:02,484 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0620b.c[3928,3941] [2021-12-27 23:32:02,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:32:02,504 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:32:02,586 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0620b.c[3928,3941] [2021-12-27 23:32:02,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:32:02,609 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:32:02,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02 WrapperNode [2021-12-27 23:32:02,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:32:02,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:32:02,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:32:02,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:32:02,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,666 INFO L137 Inliner]: procedures = 19, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 210 [2021-12-27 23:32:02,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:32:02,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:32:02,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:32:02,670 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:32:02,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:32:02,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:32:02,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:32:02,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:32:02,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (1/1) ... [2021-12-27 23:32:02,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:32:02,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:32:02,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-27 23:32:02,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-27 23:32:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:32:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 23:32:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 23:32:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-27 23:32:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-27 23:32:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-27 23:32:02,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:32:02,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:32:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-27 23:32:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-27 23:32:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 23:32:02,851 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:32:02,852 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:32:03,029 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:32:03,034 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:32:03,034 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-27 23:32:03,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:32:03 BoogieIcfgContainer [2021-12-27 23:32:03,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:32:03,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:32:03,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:32:03,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:32:03,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:32:02" (1/3) ... [2021-12-27 23:32:03,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3083cb3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:32:03, skipping insertion in model container [2021-12-27 23:32:03,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:02" (2/3) ... [2021-12-27 23:32:03,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3083cb3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:32:03, skipping insertion in model container [2021-12-27 23:32:03,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:32:03" (3/3) ... [2021-12-27 23:32:03,040 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0620b.c [2021-12-27 23:32:03,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:32:03,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:32:03,069 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:32:03,075 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 23:32:03,075 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:32:03,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:03,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-27 23:32:03,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:32:03,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:32:03,087 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:32:03,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:32:03,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2040843078, now seen corresponding path program 1 times [2021-12-27 23:32:03,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:32:03,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887331895] [2021-12-27 23:32:03,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:32:03,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:32:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:32:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:32:03,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:32:03,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887331895] [2021-12-27 23:32:03,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887331895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:32:03,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:32:03,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:32:03,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967402378] [2021-12-27 23:32:03,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:32:03,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:32:03,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:32:03,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:32:03,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:32:03,212 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:03,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:32:03,223 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2021-12-27 23:32:03,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:32:03,224 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-27 23:32:03,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:32:03,229 INFO L225 Difference]: With dead ends: 76 [2021-12-27 23:32:03,229 INFO L226 Difference]: Without dead ends: 36 [2021-12-27 23:32:03,230 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 [2021-12-27 23:32:03,232 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 23:32:03,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:32:03,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-27 23:32:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-12-27 23:32:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2021-12-27 23:32:03,256 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 11 [2021-12-27 23:32:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:32:03,257 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2021-12-27 23:32:03,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2021-12-27 23:32:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-27 23:32:03,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:32:03,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:32:03,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 23:32:03,259 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:32:03,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:32:03,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1316832376, now seen corresponding path program 1 times [2021-12-27 23:32:03,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:32:03,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819909920] [2021-12-27 23:32:03,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:32:03,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:32:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:32:03,332 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-27 23:32:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:32:03,367 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-27 23:32:03,367 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-27 23:32:03,368 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-27 23:32:03,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-27 23:32:03,371 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-27 23:32:03,373 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-27 23:32:03,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 11:32:03 BoogieIcfgContainer [2021-12-27 23:32:03,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-27 23:32:03,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-27 23:32:03,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-27 23:32:03,392 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-27 23:32:03,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:32:03" (3/4) ... [2021-12-27 23:32:03,394 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-27 23:32:03,394 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-27 23:32:03,394 INFO L158 Benchmark]: Toolchain (without parser) took 1140.57ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 43.5MB in the beginning and 54.1MB in the end (delta: -10.6MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2021-12-27 23:32:03,395 INFO L158 Benchmark]: CDTParser took 1.20ms. Allocated memory is still 62.9MB. Free memory was 45.4MB in the beginning and 45.4MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:32:03,395 INFO L158 Benchmark]: CACSL2BoogieTranslator took 355.73ms. Allocated memory is still 62.9MB. Free memory was 43.2MB in the beginning and 44.7MB in the end (delta: -1.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-27 23:32:03,396 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.21ms. Allocated memory is still 62.9MB. Free memory was 44.5MB in the beginning and 42.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 23:32:03,396 INFO L158 Benchmark]: Boogie Preprocessor took 25.01ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 40.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 23:32:03,396 INFO L158 Benchmark]: RCFGBuilder took 340.08ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 40.3MB in the beginning and 61.2MB in the end (delta: -20.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-27 23:32:03,397 INFO L158 Benchmark]: TraceAbstraction took 354.87ms. Allocated memory is still 81.8MB. Free memory was 60.5MB in the beginning and 54.6MB in the end (delta: 5.9MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2021-12-27 23:32:03,397 INFO L158 Benchmark]: Witness Printer took 2.40ms. Allocated memory is still 81.8MB. Free memory was 54.6MB in the beginning and 54.1MB in the end (delta: 426.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:32:03,399 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20ms. Allocated memory is still 62.9MB. Free memory was 45.4MB in the beginning and 45.4MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 355.73ms. Allocated memory is still 62.9MB. Free memory was 43.2MB in the beginning and 44.7MB in the end (delta: -1.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.21ms. Allocated memory is still 62.9MB. Free memory was 44.5MB in the beginning and 42.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.01ms. Allocated memory is still 62.9MB. Free memory was 42.2MB in the beginning and 40.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 340.08ms. Allocated memory was 62.9MB in the beginning and 81.8MB in the end (delta: 18.9MB). Free memory was 40.3MB in the beginning and 61.2MB in the end (delta: -20.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 354.87ms. Allocated memory is still 81.8MB. Free memory was 60.5MB in the beginning and 54.6MB in the end (delta: 5.9MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Witness Printer took 2.40ms. Allocated memory is still 81.8MB. Free memory was 54.6MB in the beginning and 54.1MB in the end (delta: 426.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 161]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of bitwiseAnd at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 84, overapproximation of someBinaryDOUBLEComparisonOperation at line 160. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000] [L156] double x = 0.0; [L157] CALL, EXPR atan_double(x) [L67] double w, s1, s2, z; [L68] __int32_t ix, hx, id; VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, x=0] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (hx) = gh_u.parts.msw [L75] ix = hx & 0x7fffffff VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-1, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, x=0] [L76] COND TRUE ix >= 0x44100000 [L77] __uint32_t low; VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-1, ix=2146435072, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, x=0] [L79] ieee_double_shape_type gl_u; [L80] gl_u.value = (x) [L81] EXPR gl_u.parts.lsw [L81] (low) = gl_u.parts.lsw [L83] COND TRUE ix > 0x7ff00000 || (ix == 0x7ff00000 && (low != 0)) [L84] return x + x; VAL [\old(x)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, hx=-1, ix=2146435072, low=1, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, x=0] [L157] RET, EXPR atan_double(x) [L157] double res = atan_double(x); [L160] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L160] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L161] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 50 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-27 23:32:03,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0620b.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2c42a61f78a6f1a62fbe64821c08eae311814302de1dfe9812261f1f96648c5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:32:05,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:32:05,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:32:05,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:32:05,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:32:05,291 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:32:05,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:32:05,296 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:32:05,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:32:05,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:32:05,303 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:32:05,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:32:05,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:32:05,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:32:05,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:32:05,311 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:32:05,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:32:05,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:32:05,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:32:05,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:32:05,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:32:05,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:32:05,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:32:05,322 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:32:05,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:32:05,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:32:05,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:32:05,328 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:32:05,329 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:32:05,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:32:05,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:32:05,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:32:05,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:32:05,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:32:05,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:32:05,333 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:32:05,333 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:32:05,333 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:32:05,334 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:32:05,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:32:05,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:32:05,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-27 23:32:05,367 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:32:05,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:32:05,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:32:05,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:32:05,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:32:05,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:32:05,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:32:05,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:32:05,371 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:32:05,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:32:05,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:32:05,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:32:05,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:32:05,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:32:05,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:32:05,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:32:05,373 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-27 23:32:05,373 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-27 23:32:05,373 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-27 23:32:05,373 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:32:05,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:32:05,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:32:05,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:32:05,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:32:05,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:32:05,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:32:05,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:32:05,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:32:05,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:32:05,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:32:05,375 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-27 23:32:05,375 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-27 23:32:05,376 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:32:05,376 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:32:05,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:32:05,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-27 23:32:05,376 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2c42a61f78a6f1a62fbe64821c08eae311814302de1dfe9812261f1f96648c5 [2021-12-27 23:32:05,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:32:05,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:32:05,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:32:05,692 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:32:05,692 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:32:05,693 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0620b.c [2021-12-27 23:32:05,735 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631e41e7a/12916e45620a4b44b8e7e5e47a8a326b/FLAGce376209f [2021-12-27 23:32:06,112 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:32:06,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0620b.c [2021-12-27 23:32:06,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631e41e7a/12916e45620a4b44b8e7e5e47a8a326b/FLAGce376209f [2021-12-27 23:32:06,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/631e41e7a/12916e45620a4b44b8e7e5e47a8a326b [2021-12-27 23:32:06,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:32:06,135 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:32:06,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:32:06,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:32:06,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:32:06,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd6ec3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06, skipping insertion in model container [2021-12-27 23:32:06,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:32:06,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:32:06,346 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0620b.c[3928,3941] [2021-12-27 23:32:06,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:32:06,365 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:32:06,408 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0620b.c[3928,3941] [2021-12-27 23:32:06,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:32:06,434 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:32:06,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06 WrapperNode [2021-12-27 23:32:06,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:32:06,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:32:06,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:32:06,437 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:32:06,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,485 INFO L137 Inliner]: procedures = 22, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 210 [2021-12-27 23:32:06,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:32:06,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:32:06,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:32:06,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:32:06,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:32:06,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:32:06,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:32:06,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:32:06,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (1/1) ... [2021-12-27 23:32:06,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:32:06,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:32:06,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-27 23:32:06,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-27 23:32:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:32:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-27 23:32:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-27 23:32:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-27 23:32:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 23:32:06,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-12-27 23:32:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-27 23:32:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:32:06,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:32:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-27 23:32:06,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 23:32:06,670 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:32:06,671 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:32:21,986 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:32:21,990 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:32:21,990 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-12-27 23:32:21,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:32:21 BoogieIcfgContainer [2021-12-27 23:32:21,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:32:21,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:32:21,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:32:21,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:32:21,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:32:06" (1/3) ... [2021-12-27 23:32:21,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31697e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:32:21, skipping insertion in model container [2021-12-27 23:32:21,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:32:06" (2/3) ... [2021-12-27 23:32:21,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31697e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:32:21, skipping insertion in model container [2021-12-27 23:32:21,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:32:21" (3/3) ... [2021-12-27 23:32:21,997 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0620b.c [2021-12-27 23:32:22,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:32:22,001 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:32:22,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:32:22,035 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-27 23:32:22,036 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:32:22,044 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:22,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-27 23:32:22,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:32:22,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:32:22,049 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:32:22,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:32:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2040843078, now seen corresponding path program 1 times [2021-12-27 23:32:22,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:32:22,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5052736] [2021-12-27 23:32:22,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:32:22,069 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:32:22,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:32:22,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-27 23:32:22,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-27 23:32:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:32:22,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-27 23:32:22,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:32:22,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:32:22,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:32:22,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:32:22,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5052736] [2021-12-27 23:32:22,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5052736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:32:22,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:32:22,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:32:22,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578353965] [2021-12-27 23:32:22,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:32:22,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:32:22,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:32:22,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:32:22,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:32:22,648 INFO L87 Difference]: Start difference. First operand has 39 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 38 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:22,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:32:22,692 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2021-12-27 23:32:22,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:32:22,693 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-27 23:32:22,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:32:22,699 INFO L225 Difference]: With dead ends: 76 [2021-12-27 23:32:22,699 INFO L226 Difference]: Without dead ends: 36 [2021-12-27 23:32:22,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:32:22,705 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 23:32:22,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:32:22,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-27 23:32:22,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-12-27 23:32:22,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 35 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:22,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2021-12-27 23:32:22,746 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 11 [2021-12-27 23:32:22,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:32:22,746 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2021-12-27 23:32:22,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2021-12-27 23:32:22,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-27 23:32:22,747 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:32:22,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:32:22,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-27 23:32:22,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:32:22,948 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:32:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:32:22,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1316832376, now seen corresponding path program 1 times [2021-12-27 23:32:22,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:32:22,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835948844] [2021-12-27 23:32:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:32:22,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:32:22,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:32:22,961 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-27 23:32:22,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-27 23:32:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:32:23,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-27 23:32:23,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:32:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:32:24,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:32:24,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:32:24,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835948844] [2021-12-27 23:32:24,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835948844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:32:24,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:32:24,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-27 23:32:24,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514133839] [2021-12-27 23:32:24,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:32:24,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-27 23:32:24,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:32:24,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-27 23:32:24,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-27 23:32:24,581 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:28,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 23:32:31,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.80s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:32:33,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 23:32:36,680 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:32:39,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:32:42,261 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:32:45,085 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:32:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:32:45,086 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-12-27 23:32:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-27 23:32:45,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-27 23:32:45,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:32:45,307 INFO L225 Difference]: With dead ends: 45 [2021-12-27 23:32:45,307 INFO L226 Difference]: Without dead ends: 32 [2021-12-27 23:32:45,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-27 23:32:45,309 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2021-12-27 23:32:45,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 120 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 7 Unknown, 17 Unchecked, 20.2s Time] [2021-12-27 23:32:45,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-27 23:32:45,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-27 23:32:45,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:45,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-12-27 23:32:45,312 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2021-12-27 23:32:45,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:32:45,312 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-12-27 23:32:45,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:45,312 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-12-27 23:32:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-27 23:32:45,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:32:45,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:32:45,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-27 23:32:45,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:32:45,517 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:32:45,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:32:45,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1440122883, now seen corresponding path program 1 times [2021-12-27 23:32:45,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:32:45,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198715287] [2021-12-27 23:32:45,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:32:45,518 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:32:45,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:32:45,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-27 23:32:45,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-27 23:32:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:32:45,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-27 23:32:45,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:32:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:32:47,243 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:32:47,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:32:47,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198715287] [2021-12-27 23:32:47,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198715287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:32:47,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:32:47,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-27 23:32:47,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590947145] [2021-12-27 23:32:47,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:32:47,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-27 23:32:47,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:32:47,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-27 23:32:47,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-27 23:32:47,245 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:32:51,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 23:32:54,975 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:32:57,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:32:59,299 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 23:33:02,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:33:05,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:33:08,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:33:11,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:33:11,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:33:11,540 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2021-12-27 23:33:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-27 23:33:11,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-27 23:33:11,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:33:11,544 INFO L225 Difference]: With dead ends: 45 [2021-12-27 23:33:11,545 INFO L226 Difference]: Without dead ends: 42 [2021-12-27 23:33:11,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-27 23:33:11,546 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 33 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2021-12-27 23:33:11,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 108 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 8 Unknown, 0 Unchecked, 23.6s Time] [2021-12-27 23:33:11,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-27 23:33:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-12-27 23:33:11,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:33:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-12-27 23:33:11,550 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 13 [2021-12-27 23:33:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:33:11,550 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-12-27 23:33:11,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:33:11,550 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-12-27 23:33:11,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-27 23:33:11,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:33:11,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:33:11,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-27 23:33:11,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:33:11,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:33:11,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:33:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 893293957, now seen corresponding path program 1 times [2021-12-27 23:33:11,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:33:11,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510657246] [2021-12-27 23:33:11,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:33:11,773 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:33:11,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:33:11,774 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-27 23:33:11,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-27 23:33:15,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:33:15,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-27 23:33:15,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:33:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:33:17,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:33:17,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:33:17,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510657246] [2021-12-27 23:33:17,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510657246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:33:17,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:33:17,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-27 23:33:17,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389756063] [2021-12-27 23:33:17,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:33:17,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-27 23:33:17,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:33:17,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-27 23:33:17,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-27 23:33:17,415 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:33:21,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-27 23:33:24,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []