./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_0930.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/float_req_bl_0930.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 d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:48:09,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:48:09,443 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:48:09,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:48:09,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:48:09,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:48:09,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:48:09,490 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:48:09,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:48:09,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:48:09,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:48:09,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:48:09,497 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:48:09,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:48:09,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:48:09,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:48:09,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:48:09,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:48:09,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:48:09,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:48:09,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:48:09,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:48:09,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:48:09,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:48:09,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:48:09,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:48:09,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:48:09,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:48:09,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:48:09,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:48:09,521 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:48:09,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:48:09,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:48:09,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:48:09,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:48:09,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:48:09,525 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:48:09,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:48:09,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:48:09,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:48:09,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:48:09,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:48:09,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:48:09,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:48:09,550 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:48:09,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:48:09,551 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:48:09,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:48:09,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:48:09,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:48:09,552 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:48:09,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:48:09,553 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:48:09,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:48:09,553 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:48:09,553 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:48:09,553 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:48:09,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:48:09,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:48:09,554 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:48:09,554 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:48:09,554 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:48:09,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:48:09,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:48:09,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:48:09,554 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:48:09,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:48:09,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:48:09,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:48:09,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:48:09,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:48:09,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:48:09,555 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:48:09,556 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:48:09,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:48:09,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:48:09,556 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 [2021-12-15 23:48:09,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:48:09,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:48:09,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:48:09,754 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:48:09,754 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:48:09,755 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-12-15 23:48:09,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31850a693/6c3177ba91ce4b73b8f6e02ed05d5bc1/FLAG80dff8021 [2021-12-15 23:48:10,159 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:48:10,160 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-12-15 23:48:10,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31850a693/6c3177ba91ce4b73b8f6e02ed05d5bc1/FLAG80dff8021 [2021-12-15 23:48:10,174 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31850a693/6c3177ba91ce4b73b8f6e02ed05d5bc1 [2021-12-15 23:48:10,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:48:10,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:48:10,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:48:10,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:48:10,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:48:10,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc79ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10, skipping insertion in model container [2021-12-15 23:48:10,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:48:10,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:48:10,343 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/float_req_bl_0930.c[3104,3117] [2021-12-15 23:48:10,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:48:10,350 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:48:10,369 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/float_req_bl_0930.c[3104,3117] [2021-12-15 23:48:10,369 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:48:10,380 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:48:10,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10 WrapperNode [2021-12-15 23:48:10,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:48:10,382 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:48:10,382 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:48:10,382 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:48:10,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,412 INFO L137 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 157 [2021-12-15 23:48:10,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:48:10,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:48:10,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:48:10,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:48:10,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,429 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:48:10,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:48:10,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:48:10,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:48:10,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (1/1) ... [2021-12-15 23:48:10,444 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:48:10,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:48:10,465 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) [2021-12-15 23:48:10,468 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 [2021-12-15 23:48:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:48:10,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:48:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:48:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-15 23:48:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 23:48:10,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-15 23:48:10,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:48:10,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:48:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 23:48:10,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:48:10,549 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:48:10,550 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:48:10,675 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:48:10,691 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:48:10,691 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-15 23:48:10,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:10 BoogieIcfgContainer [2021-12-15 23:48:10,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:48:10,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:48:10,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:48:10,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:48:10,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:48:10" (1/3) ... [2021-12-15 23:48:10,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8c7af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:10, skipping insertion in model container [2021-12-15 23:48:10,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:10" (2/3) ... [2021-12-15 23:48:10,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8c7af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:10, skipping insertion in model container [2021-12-15 23:48:10,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:10" (3/3) ... [2021-12-15 23:48:10,710 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2021-12-15 23:48:10,713 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:48:10,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:48:10,757 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:48:10,764 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 [2021-12-15 23:48:10,765 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:48:10,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 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) [2021-12-15 23:48:10,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 23:48:10,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:48:10,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:48:10,791 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:48:10,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:48:10,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2021-12-15 23:48:10,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:48:10,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299026966] [2021-12-15 23:48:10,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:48:10,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:48:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:48:10,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:48:10,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:48:10,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299026966] [2021-12-15 23:48:10,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299026966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:48:10,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:48:10,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:48:10,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875975940] [2021-12-15 23:48:10,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:48:10,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:48:10,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:48:10,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:48:10,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:48:10,953 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-15 23:48:10,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:48:10,964 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2021-12-15 23:48:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:48:10,966 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-12-15 23:48:10,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:48:10,971 INFO L225 Difference]: With dead ends: 66 [2021-12-15 23:48:10,971 INFO L226 Difference]: Without dead ends: 31 [2021-12-15 23:48:10,973 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 [2021-12-15 23:48:10,975 INFO L933 BasicCegarLoop]: 45 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, 45 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 [2021-12-15 23:48:10,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:48:10,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-15 23:48:10,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-15 23:48:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 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) [2021-12-15 23:48:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-12-15 23:48:10,996 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2021-12-15 23:48:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:48:10,996 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-12-15 23:48:10,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-15 23:48:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-12-15 23:48:10,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 23:48:10,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:48:10,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:48:10,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:48:10,997 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:48:10,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:48:10,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2021-12-15 23:48:10,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:48:10,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635149523] [2021-12-15 23:48:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:48:10,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:48:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:48:11,035 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 23:48:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:48:11,069 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 23:48:11,070 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 23:48:11,073 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:48:11,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:48:11,076 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 23:48:11,078 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:48:11,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:48:11 BoogieIcfgContainer [2021-12-15 23:48:11,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:48:11,096 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:48:11,096 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:48:11,096 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:48:11,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:10" (3/4) ... [2021-12-15 23:48:11,099 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 23:48:11,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:48:11,099 INFO L158 Benchmark]: Toolchain (without parser) took 923.02ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 74.3MB in the beginning and 64.0MB in the end (delta: 10.3MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2021-12-15 23:48:11,099 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:48:11,100 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.28ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 74.0MB in the beginning and 106.5MB in the end (delta: -32.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:48:11,100 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.70ms. Allocated memory is still 134.2MB. Free memory was 106.5MB in the beginning and 104.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:48:11,101 INFO L158 Benchmark]: Boogie Preprocessor took 17.58ms. Allocated memory is still 134.2MB. Free memory was 104.4MB in the beginning and 102.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:48:11,101 INFO L158 Benchmark]: RCFGBuilder took 260.95ms. Allocated memory is still 134.2MB. Free memory was 102.8MB in the beginning and 90.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 23:48:11,101 INFO L158 Benchmark]: TraceAbstraction took 402.69ms. Allocated memory is still 134.2MB. Free memory was 89.8MB in the beginning and 64.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 23:48:11,102 INFO L158 Benchmark]: Witness Printer took 2.54ms. Allocated memory is still 134.2MB. Free memory was 64.6MB in the beginning and 64.0MB in the end (delta: 560.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:48:11,104 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 102.8MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.28ms. Allocated memory was 102.8MB in the beginning and 134.2MB in the end (delta: 31.5MB). Free memory was 74.0MB in the beginning and 106.5MB in the end (delta: -32.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.70ms. Allocated memory is still 134.2MB. Free memory was 106.5MB in the beginning and 104.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.58ms. Allocated memory is still 134.2MB. Free memory was 104.4MB in the beginning and 102.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 260.95ms. Allocated memory is still 134.2MB. Free memory was 102.8MB in the beginning and 90.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 402.69ms. Allocated memory is still 134.2MB. Free memory was 89.8MB in the beginning and 64.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.54ms. Allocated memory is still 134.2MB. Free memory was 64.6MB in the beginning and 64.0MB in the end (delta: 560.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 123]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 122, overapproximation of someBinaryArithmeticFLOAToperation at line 34, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L118] float x = 1.0f; [L119] CALL, EXPR __ieee754_logf(x) [L23] float hfsq, f, s, z, R, w, t1, t2, dk; [L24] __int32_t k, ix, i, j; VAL [\old(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L27] ieee_float_shape_type gf_u; [L28] gf_u.value = (x) [L29] EXPR gf_u.word [L29] (ix) = gf_u.word [L32] k = 0 VAL [\old(x)=1, ix=-1, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L33] COND TRUE ((ix & 0x7fffffff) == 0) [L34] return -two25_log / zero_log; VAL [\old(x)=1, ix=-1, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L119] RET, EXPR __ieee754_logf(x) [L119] float res = __ieee754_logf(x); [L122] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=4294967296, res == 0.0f && __signbit_float(res) == 0=0, two25_log=33554432, x=1, zero_log=0] [L122] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L123] reach_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=4294967296, two25_log=33554432, x=1, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 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, 45 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, 45 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=34occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2021-12-15 23:48:11,135 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/float_req_bl_0930.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 d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:48:12,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:48:12,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:48:12,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:48:12,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:48:12,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:48:12,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:48:12,753 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:48:12,754 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:48:12,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:48:12,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:48:12,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:48:12,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:48:12,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:48:12,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:48:12,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:48:12,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:48:12,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:48:12,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:48:12,784 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:48:12,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:48:12,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:48:12,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:48:12,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:48:12,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:48:12,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:48:12,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:48:12,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:48:12,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:48:12,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:48:12,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:48:12,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:48:12,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:48:12,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:48:12,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:48:12,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:48:12,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:48:12,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:48:12,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:48:12,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:48:12,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:48:12,803 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 23:48:12,825 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:48:12,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:48:12,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:48:12,827 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:48:12,827 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:48:12,827 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:48:12,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:48:12,828 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:48:12,828 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:48:12,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:48:12,829 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:48:12,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:48:12,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:48:12,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:48:12,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:48:12,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:48:12,830 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 23:48:12,830 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 23:48:12,830 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 23:48:12,830 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:48:12,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:48:12,831 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:48:12,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:48:12,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:48:12,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:48:12,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:48:12,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:48:12,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:48:12,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:48:12,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:48:12,832 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 23:48:12,832 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 23:48:12,833 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:48:12,833 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:48:12,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:48:12,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:48:12,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 23:48:12,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 [2021-12-15 23:48:13,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:48:13,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:48:13,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:48:13,097 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:48:13,097 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:48:13,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-12-15 23:48:13,141 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37bf62422/faf9e43b934741b9b49492af22e83876/FLAG2fd118cb5 [2021-12-15 23:48:13,468 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:48:13,468 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-12-15 23:48:13,488 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37bf62422/faf9e43b934741b9b49492af22e83876/FLAG2fd118cb5 [2021-12-15 23:48:13,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37bf62422/faf9e43b934741b9b49492af22e83876 [2021-12-15 23:48:13,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:48:13,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:48:13,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:48:13,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:48:13,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:48:13,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a6c528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13, skipping insertion in model container [2021-12-15 23:48:13,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:48:13,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:48:13,631 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/float_req_bl_0930.c[3104,3117] [2021-12-15 23:48:13,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:48:13,650 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:48:13,697 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/float_req_bl_0930.c[3104,3117] [2021-12-15 23:48:13,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:48:13,711 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:48:13,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13 WrapperNode [2021-12-15 23:48:13,711 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:48:13,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:48:13,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:48:13,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:48:13,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,748 INFO L137 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 157 [2021-12-15 23:48:13,748 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:48:13,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:48:13,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:48:13,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:48:13,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:48:13,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:48:13,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:48:13,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:48:13,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (1/1) ... [2021-12-15 23:48:13,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:48:13,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:48:13,821 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) [2021-12-15 23:48:13,836 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 [2021-12-15 23:48:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:48:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 23:48:13,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 23:48:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-15 23:48:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-15 23:48:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:48:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:48:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-15 23:48:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-15 23:48:13,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 23:48:13,920 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:48:13,921 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:48:31,331 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:48:31,335 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:48:31,336 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-15 23:48:31,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:31 BoogieIcfgContainer [2021-12-15 23:48:31,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:48:31,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:48:31,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:48:31,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:48:31,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:48:13" (1/3) ... [2021-12-15 23:48:31,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3832d183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:31, skipping insertion in model container [2021-12-15 23:48:31,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:48:13" (2/3) ... [2021-12-15 23:48:31,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3832d183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:48:31, skipping insertion in model container [2021-12-15 23:48:31,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:31" (3/3) ... [2021-12-15 23:48:31,342 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2021-12-15 23:48:31,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:48:31,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:48:31,373 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:48:31,377 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 [2021-12-15 23:48:31,377 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:48:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 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) [2021-12-15 23:48:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 23:48:31,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:48:31,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:48:31,389 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:48:31,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:48:31,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2021-12-15 23:48:31,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:48:31,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987486442] [2021-12-15 23:48:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:48:31,401 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:48:31,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:48:31,403 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) [2021-12-15 23:48:31,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 23:48:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:48:31,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 23:48:31,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:48:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:48:31,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:48:31,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:48:31,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987486442] [2021-12-15 23:48:31,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987486442] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:48:31,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:48:31,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:48:31,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570644804] [2021-12-15 23:48:31,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:48:31,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:48:31,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:48:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:48:31,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:48:31,875 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-15 23:48:31,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:48:31,889 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2021-12-15 23:48:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:48:31,892 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-12-15 23:48:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:48:31,902 INFO L225 Difference]: With dead ends: 66 [2021-12-15 23:48:31,903 INFO L226 Difference]: Without dead ends: 31 [2021-12-15 23:48:31,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:48:31,908 INFO L933 BasicCegarLoop]: 45 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, 45 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 [2021-12-15 23:48:31,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 23:48:31,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-15 23:48:31,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-15 23:48:31,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 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) [2021-12-15 23:48:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-12-15 23:48:31,947 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2021-12-15 23:48:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:48:31,948 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-12-15 23:48:31,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-12-15 23:48:31,948 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-12-15 23:48:31,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 23:48:31,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:48:31,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:48:31,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 23:48:32,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:48:32,165 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:48:32,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:48:32,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2021-12-15 23:48:32,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:48:32,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642406754] [2021-12-15 23:48:32,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:48:32,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:48:32,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:48:32,168 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) [2021-12-15 23:48:32,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 23:48:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:48:32,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-15 23:48:32,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:48:32,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:48:32,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:48:32,699 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:48:32,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642406754] [2021-12-15 23:48:32,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642406754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:48:32,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:48:32,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 23:48:32,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672642066] [2021-12-15 23:48:32,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:48:32,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 23:48:32,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:48:32,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 23:48:32,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:48:32,702 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-12-15 23:48:32,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:48:32,709 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-12-15 23:48:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 23:48:32,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-12-15 23:48:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:48:32,711 INFO L225 Difference]: With dead ends: 40 [2021-12-15 23:48:32,711 INFO L226 Difference]: Without dead ends: 31 [2021-12-15 23:48:32,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:48:32,712 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:48:32,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2021-12-15 23:48:32,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-15 23:48:32,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-15 23:48:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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) [2021-12-15 23:48:32,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-12-15 23:48:32,717 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-12-15 23:48:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:48:32,717 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-12-15 23:48:32,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-12-15 23:48:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-12-15 23:48:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-15 23:48:32,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:48:32,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:48:32,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 23:48:32,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:48:32,933 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:48:32,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:48:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1245957376, now seen corresponding path program 1 times [2021-12-15 23:48:32,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:48:32,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12342156] [2021-12-15 23:48:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:48:32,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:48:32,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:48:32,936 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) [2021-12-15 23:48:32,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-15 23:48:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:48:33,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-15 23:48:33,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:48:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:48:33,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:48:33,523 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:48:33,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12342156] [2021-12-15 23:48:33,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12342156] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:48:33,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:48:33,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 23:48:33,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221811642] [2021-12-15 23:48:33,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:48:33,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 23:48:33,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:48:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 23:48:33,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:48:33,525 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-12-15 23:48:33,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:48:33,528 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-12-15 23:48:33,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 23:48:33,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2021-12-15 23:48:33,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:48:33,529 INFO L225 Difference]: With dead ends: 40 [2021-12-15 23:48:33,529 INFO L226 Difference]: Without dead ends: 31 [2021-12-15 23:48:33,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:48:33,530 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:48:33,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2021-12-15 23:48:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-15 23:48:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-15 23:48:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 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) [2021-12-15 23:48:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2021-12-15 23:48:33,533 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 11 [2021-12-15 23:48:33,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:48:33,533 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-12-15 23:48:33,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2021-12-15 23:48:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2021-12-15 23:48:33,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 23:48:33,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:48:33,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:48:33,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-15 23:48:33,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:48:33,752 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:48:33,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:48:33,752 INFO L85 PathProgramCache]: Analyzing trace with hash 21115748, now seen corresponding path program 1 times [2021-12-15 23:48:33,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:48:33,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324315735] [2021-12-15 23:48:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:48:33,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:48:33,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:48:33,754 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) [2021-12-15 23:48:33,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-15 23:48:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:48:33,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-15 23:48:33,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:48:34,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:48:34,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:48:34,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:48:34,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324315735] [2021-12-15 23:48:34,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324315735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:48:34,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:48:34,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 23:48:34,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005012319] [2021-12-15 23:48:34,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:48:34,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 23:48:34,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:48:34,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 23:48:34,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:48:34,177 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-15 23:48:34,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:48:34,180 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2021-12-15 23:48:34,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 23:48:34,181 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-12-15 23:48:34,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:48:34,181 INFO L225 Difference]: With dead ends: 40 [2021-12-15 23:48:34,181 INFO L226 Difference]: Without dead ends: 31 [2021-12-15 23:48:34,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:48:34,182 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:48:34,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2021-12-15 23:48:34,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-15 23:48:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-15 23:48:34,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 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) [2021-12-15 23:48:34,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-12-15 23:48:34,185 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 12 [2021-12-15 23:48:34,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:48:34,186 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-12-15 23:48:34,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-15 23:48:34,186 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-12-15 23:48:34,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 23:48:34,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:48:34,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:48:34,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-15 23:48:34,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:48:34,399 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:48:34,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:48:34,399 INFO L85 PathProgramCache]: Analyzing trace with hash 933425138, now seen corresponding path program 1 times [2021-12-15 23:48:34,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:48:34,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443468903] [2021-12-15 23:48:34,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:48:34,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:48:34,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:48:34,401 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:48:34,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-15 23:48:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:48:34,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 23:48:34,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:48:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:48:35,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:48:35,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:48:35,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443468903] [2021-12-15 23:48:35,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443468903] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:48:35,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:48:35,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 23:48:35,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327694045] [2021-12-15 23:48:35,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:48:35,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:48:35,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:48:35,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:48:35,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:48:35,172 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-12-15 23:48:35,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:48:35,205 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2021-12-15 23:48:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 23:48:35,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2021-12-15 23:48:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:48:35,207 INFO L225 Difference]: With dead ends: 45 [2021-12-15 23:48:35,207 INFO L226 Difference]: Without dead ends: 42 [2021-12-15 23:48:35,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:48:35,208 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:48:35,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 110 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2021-12-15 23:48:35,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-15 23:48:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-12-15 23:48:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 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) [2021-12-15 23:48:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-12-15 23:48:35,212 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 20 [2021-12-15 23:48:35,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:48:35,213 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-12-15 23:48:35,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2021-12-15 23:48:35,213 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-12-15 23:48:35,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 23:48:35,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:48:35,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:48:35,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-15 23:48:35,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:48:35,416 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:48:35,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:48:35,417 INFO L85 PathProgramCache]: Analyzing trace with hash 935272180, now seen corresponding path program 1 times [2021-12-15 23:48:35,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:48:35,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [796007144] [2021-12-15 23:48:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:48:35,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:48:35,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:48:35,421 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:48:35,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-15 23:48:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:48:35,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-15 23:48:35,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:48:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:48:36,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:48:36,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:48:36,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [796007144] [2021-12-15 23:48:36,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [796007144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:48:36,762 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:48:36,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-15 23:48:36,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379278034] [2021-12-15 23:48:36,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:48:36,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 23:48:36,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:48:36,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 23:48:36,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:48:36,764 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-12-15 23:48:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:48:36,768 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2021-12-15 23:48:36,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-15 23:48:36,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 20 [2021-12-15 23:48:36,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:48:36,769 INFO L225 Difference]: With dead ends: 50 [2021-12-15 23:48:36,769 INFO L226 Difference]: Without dead ends: 41 [2021-12-15 23:48:36,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:48:36,770 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:48:36,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 106 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 32 Unchecked, 0.0s Time] [2021-12-15 23:48:36,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-15 23:48:36,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-12-15 23:48:36,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 39 states have internal predecessors, (50), 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) [2021-12-15 23:48:36,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2021-12-15 23:48:36,774 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 20 [2021-12-15 23:48:36,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:48:36,774 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2021-12-15 23:48:36,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-12-15 23:48:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2021-12-15 23:48:36,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 23:48:36,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:48:36,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:48:36,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-15 23:48:36,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:48:36,991 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:48:36,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:48:36,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1142140884, now seen corresponding path program 1 times [2021-12-15 23:48:36,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:48:36,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563496911] [2021-12-15 23:48:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:48:36,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:48:36,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:48:36,994 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:48:36,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-15 23:48:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:48:37,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-15 23:48:37,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:48:37,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-15 23:48:38,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 57 [2021-12-15 23:48:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:48:38,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:48:38,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:48:38,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563496911] [2021-12-15 23:48:38,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563496911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:48:38,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:48:38,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-15 23:48:38,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867030912] [2021-12-15 23:48:38,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:48:38,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 23:48:38,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:48:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 23:48:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-15 23:48:38,944 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-12-15 23:48:41,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:48:44,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:48:47,323 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:48:49,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:48:51,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:48:53,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:48:55,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:48:56,866 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:48:58,964 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:49:00,399 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:49:02,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:49:04,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:49:06,619 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-15 23:49:06,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:49:06,775 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2021-12-15 23:49:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-15 23:49:06,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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 20 [2021-12-15 23:49:06,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:49:06,781 INFO L225 Difference]: With dead ends: 59 [2021-12-15 23:49:06,781 INFO L226 Difference]: Without dead ends: 49 [2021-12-15 23:49:06,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-15 23:49:06,782 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 26 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 27.5s IncrementalHoareTripleChecker+Time [2021-12-15 23:49:06,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 96 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 10 Unknown, 53 Unchecked, 27.5s Time] [2021-12-15 23:49:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-15 23:49:06,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 40. [2021-12-15 23:49:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 39 states have internal predecessors, (49), 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) [2021-12-15 23:49:06,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2021-12-15 23:49:06,785 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 20 [2021-12-15 23:49:06,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:49:06,785 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2021-12-15 23:49:06,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-12-15 23:49:06,786 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2021-12-15 23:49:06,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-15 23:49:06,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:49:06,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:49:06,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-15 23:49:06,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:49:07,000 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:49:07,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:49:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash -656486045, now seen corresponding path program 1 times [2021-12-15 23:49:07,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:49:07,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790240518] [2021-12-15 23:49:07,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:49:07,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:49:07,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:49:07,001 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:49:07,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-15 23:49:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:49:07,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-15 23:49:08,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:49:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:49:08,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:49:08,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:49:08,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790240518] [2021-12-15 23:49:08,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790240518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:49:08,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:49:08,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-15 23:49:08,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361749022] [2021-12-15 23:49:08,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:49:08,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-15 23:49:08,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:49:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-15 23:49:08,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:49:08,533 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-12-15 23:49:08,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:49:08,535 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2021-12-15 23:49:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 23:49:08,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 20 [2021-12-15 23:49:08,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:49:08,536 INFO L225 Difference]: With dead ends: 52 [2021-12-15 23:49:08,536 INFO L226 Difference]: Without dead ends: 40 [2021-12-15 23:49:08,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-15 23:49:08,537 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:49:08,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 18 Unchecked, 0.0s Time] [2021-12-15 23:49:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-15 23:49:08,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-12-15 23:49:08,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 39 states have internal predecessors, (48), 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) [2021-12-15 23:49:08,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2021-12-15 23:49:08,540 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 20 [2021-12-15 23:49:08,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:49:08,540 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2021-12-15 23:49:08,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2021-12-15 23:49:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2021-12-15 23:49:08,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-15 23:49:08,541 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:49:08,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:49:08,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-15 23:49:08,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:49:08,748 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:49:08,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:49:08,748 INFO L85 PathProgramCache]: Analyzing trace with hash 839503006, now seen corresponding path program 1 times [2021-12-15 23:49:08,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:49:08,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625247198] [2021-12-15 23:49:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:49:08,749 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:49:08,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:49:08,750 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:49:08,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-15 23:49:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:49:09,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-15 23:49:09,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:49:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:49:09,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:49:09,435 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:49:09,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625247198] [2021-12-15 23:49:09,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625247198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:49:09,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:49:09,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-15 23:49:09,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774066023] [2021-12-15 23:49:09,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:49:09,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 23:49:09,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:49:09,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 23:49:09,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:49:09,436 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-12-15 23:49:09,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:49:09,438 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2021-12-15 23:49:09,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 23:49:09,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2021-12-15 23:49:09,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:49:09,439 INFO L225 Difference]: With dead ends: 49 [2021-12-15 23:49:09,439 INFO L226 Difference]: Without dead ends: 25 [2021-12-15 23:49:09,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 23:49:09,440 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:49:09,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2021-12-15 23:49:09,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-15 23:49:09,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-15 23:49:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0) internal successors, (24), 24 states have internal predecessors, (24), 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) [2021-12-15 23:49:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2021-12-15 23:49:09,443 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 22 [2021-12-15 23:49:09,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:49:09,443 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2021-12-15 23:49:09,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-12-15 23:49:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2021-12-15 23:49:09,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 23:49:09,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:49:09,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:49:09,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-15 23:49:09,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:49:09,653 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:49:09,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:49:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash 722082119, now seen corresponding path program 1 times [2021-12-15 23:49:09,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:49:09,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645616224] [2021-12-15 23:49:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:49:09,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:49:09,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:49:09,655 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 23:49:09,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-15 23:49:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:49:09,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-15 23:49:09,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:49:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 23:49:11,147 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:49:11,147 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:49:11,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645616224] [2021-12-15 23:49:11,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645616224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:49:11,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:49:11,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-15 23:49:11,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548499457] [2021-12-15 23:49:11,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:49:11,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-15 23:49:11,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:49:11,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-15 23:49:11,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-15 23:49:11,148 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-12-15 23:49:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:49:11,295 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-12-15 23:49:11,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-15 23:49:11,295 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 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 24 [2021-12-15 23:49:11,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:49:11,295 INFO L225 Difference]: With dead ends: 25 [2021-12-15 23:49:11,295 INFO L226 Difference]: Without dead ends: 0 [2021-12-15 23:49:11,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-15 23:49:11,296 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 23:49:11,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 102 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 14 Unchecked, 0.0s Time] [2021-12-15 23:49:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-15 23:49:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-15 23:49:11,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 23:49:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-15 23:49:11,297 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-12-15 23:49:11,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:49:11,297 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-15 23:49:11,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 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) [2021-12-15 23:49:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-15 23:49:11,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-15 23:49:11,299 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:49:11,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-15 23:49:11,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:49:11,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-15 23:49:12,369 INFO L858 garLoopResultBuilder]: For program point L93(lines 93 96) no Hoare annotation was computed. [2021-12-15 23:49:12,370 INFO L858 garLoopResultBuilder]: For program point L60(lines 60 65) no Hoare annotation was computed. [2021-12-15 23:49:12,370 INFO L858 garLoopResultBuilder]: For program point L85(lines 85 97) no Hoare annotation was computed. [2021-12-15 23:49:12,370 INFO L861 garLoopResultBuilder]: At program point L127(lines 112 128) the Hoare annotation is: true [2021-12-15 23:49:12,370 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-15 23:49:12,370 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-15 23:49:12,370 INFO L858 garLoopResultBuilder]: For program point L103-1(lines 103 107) no Hoare annotation was computed. [2021-12-15 23:49:12,370 INFO L858 garLoopResultBuilder]: For program point L37(lines 37 38) no Hoare annotation was computed. [2021-12-15 23:49:12,370 INFO L854 garLoopResultBuilder]: At program point L103-2(lines 103 107) the Hoare annotation is: (and (or (exists ((currentRoundingMode RoundingMode)) (= ~zero_log~0 ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)))) |ULTIMATE.start_main_#t~short10#1|) (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___signbit_float_~x#1| ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53))))) [2021-12-15 23:49:12,370 INFO L858 garLoopResultBuilder]: For program point L103-3(lines 103 107) no Hoare annotation was computed. [2021-12-15 23:49:12,370 INFO L858 garLoopResultBuilder]: For program point L87(lines 87 91) no Hoare annotation was computed. [2021-12-15 23:49:12,370 INFO L854 garLoopResultBuilder]: At program point L96(lines 22 98) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= |ULTIMATE.start___ieee754_logf_#res#1| ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)))) [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L39(lines 39 47) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L39-1(lines 39 47) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L122(line 122) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L122-2(lines 122 125) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L123(line 123) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 123) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 34) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L58(lines 58 74) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L42-1(lines 42 46) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L854 garLoopResultBuilder]: At program point L42-2(lines 42 46) the Hoare annotation is: false [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 66) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L858 garLoopResultBuilder]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2021-12-15 23:49:12,371 INFO L854 garLoopResultBuilder]: At program point L26-2(lines 26 30) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ~zero_log~0 ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53))) (= |ULTIMATE.start___ieee754_logf_~x#1| ((_ to_fp 8 24) currentRoundingMode 1.0))) [2021-12-15 23:49:12,372 INFO L858 garLoopResultBuilder]: For program point L26-3(lines 26 30) no Hoare annotation was computed. [2021-12-15 23:49:12,372 INFO L858 garLoopResultBuilder]: For program point L51-1(lines 51 55) no Hoare annotation was computed. [2021-12-15 23:49:12,372 INFO L854 garLoopResultBuilder]: At program point L51-2(lines 51 55) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (exists ((|v_ULTIMATE.start___ieee754_logf_~ix~0#1_18| (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= (bvadd |ULTIMATE.start___ieee754_logf_~k~0#1| (_ bv127 32)) (bvashr |v_ULTIMATE.start___ieee754_logf_~ix~0#1_18| (_ bv23 32))) (= (fp ((_ extract 31 31) |v_ULTIMATE.start___ieee754_logf_~ix~0#1_18|) ((_ extract 30 23) |v_ULTIMATE.start___ieee754_logf_~ix~0#1_18|) ((_ extract 22 0) |v_ULTIMATE.start___ieee754_logf_~ix~0#1_18|)) ((_ to_fp 8 24) currentRoundingMode 1.0)) (= |ULTIMATE.start___ieee754_logf_~i~0#1| (bvand (_ bv8388608 32) (bvadd (bvand (_ bv8388607 32) |v_ULTIMATE.start___ieee754_logf_~ix~0#1_18|) (_ bv4913952 32)))))) (= ~zero_log~0 ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53))) (exists ((|v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15| (_ BitVec 32))) (let ((.cse0 (select (select |#memory_int| |v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15|) (_ bv0 32)))) (and (= (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) ((_ to_fp 8 24) currentRoundingMode 1.0)) (= |ULTIMATE.start___ieee754_logf_~ix~0#1| (bvand (_ bv8388607 32) .cse0)))))) [2021-12-15 23:49:12,372 INFO L858 garLoopResultBuilder]: For program point L51-3(lines 51 55) no Hoare annotation was computed. [2021-12-15 23:49:12,372 INFO L854 garLoopResultBuilder]: At program point L109(lines 100 110) the Hoare annotation is: (and (or (exists ((currentRoundingMode RoundingMode)) (= ~zero_log~0 ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)))) |ULTIMATE.start_main_#t~short10#1|) (= |ULTIMATE.start___signbit_float_#res#1| (_ bv0 32))) [2021-12-15 23:49:12,372 INFO L858 garLoopResultBuilder]: For program point L68(lines 68 73) no Hoare annotation was computed. [2021-12-15 23:49:12,372 INFO L858 garLoopResultBuilder]: For program point L35(lines 35 36) no Hoare annotation was computed. [2021-12-15 23:49:12,374 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 23:49:12,375 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:49:12,380 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-15 23:49:12,380 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,380 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,381 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,384 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-15 23:49:12,385 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,385 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,385 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,385 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,385 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,385 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,385 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,386 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,386 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,386 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,387 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,387 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,387 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,388 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,388 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,388 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,388 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,388 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,389 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-15 23:49:12,389 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-15 23:49:12,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:49:12 BoogieIcfgContainer [2021-12-15 23:49:12,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:49:12,390 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:49:12,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:49:12,390 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:49:12,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:48:31" (3/4) ... [2021-12-15 23:49:12,392 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-15 23:49:12,399 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-12-15 23:49:12,400 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-15 23:49:12,400 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-15 23:49:12,400 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-15 23:49:12,414 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: \result == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE())) [2021-12-15 23:49:12,414 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_ULTIMATE.start___ieee754_logf_~ix~0#1_18 : bv32, currentRoundingMode : FloatRoundingMode :: (~bvadd64(k, 127bv32) == ~bvashr32(v_ULTIMATE.start___ieee754_logf_~ix~0#1_18, 23bv32) && ~fp~LONGDOUBLE(v_ULTIMATE.start___ieee754_logf_~ix~0#1_18[31:31], v_ULTIMATE.start___ieee754_logf_~ix~0#1_18[30:23], v_ULTIMATE.start___ieee754_logf_~ix~0#1_18[22:0]) == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) && i == ~bvand32(8388608bv32, ~bvadd64(~bvand32(8388607bv32, v_ULTIMATE.start___ieee754_logf_~ix~0#1_18), 4913952bv32)))) && zero_log == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE())) && (\exists v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15 : bv32 :: ~fp~LONGDOUBLE(unknown-#memory_int-unknown[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15][0bv32][31:31], unknown-#memory_int-unknown[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15][0bv32][30:23], unknown-#memory_int-unknown[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15][0bv32][22:0]) == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0) && ix == ~bvand32(8388607bv32, unknown-#memory_int-unknown[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15][0bv32])) [2021-12-15 23:49:12,414 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: zero_log == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE())) || aux-res == 0.0f && __signbit_float(res) == 0-aux) && (\exists currentRoundingMode : FloatRoundingMode :: x == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE())) [2021-12-15 23:49:12,415 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: zero_log == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE())) || aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == 0bv32 [2021-12-15 23:49:12,425 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 23:49:12,426 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:49:12,426 INFO L158 Benchmark]: Toolchain (without parser) took 58923.33ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 36.8MB in the beginning and 24.6MB in the end (delta: 12.2MB). Peak memory consumption was 23.5MB. Max. memory is 16.1GB. [2021-12-15 23:49:12,426 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 40.2MB in the beginning and 40.2MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:49:12,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.92ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 38.9MB in the end (delta: -2.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-15 23:49:12,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.10ms. Allocated memory is still 58.7MB. Free memory was 38.9MB in the beginning and 36.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:49:12,428 INFO L158 Benchmark]: Boogie Preprocessor took 25.25ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 34.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:49:12,428 INFO L158 Benchmark]: RCFGBuilder took 17562.00ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.9MB in the beginning and 50.1MB in the end (delta: -15.2MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2021-12-15 23:49:12,428 INFO L158 Benchmark]: TraceAbstraction took 41051.44ms. Allocated memory is still 71.3MB. Free memory was 49.5MB in the beginning and 29.3MB in the end (delta: 20.2MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2021-12-15 23:49:12,429 INFO L158 Benchmark]: Witness Printer took 35.88ms. Allocated memory is still 71.3MB. Free memory was 29.3MB in the beginning and 24.6MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-15 23:49:12,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory was 40.2MB in the beginning and 40.2MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.92ms. Allocated memory is still 58.7MB. Free memory was 36.7MB in the beginning and 38.9MB in the end (delta: -2.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.10ms. Allocated memory is still 58.7MB. Free memory was 38.9MB in the beginning and 36.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.25ms. Allocated memory is still 58.7MB. Free memory was 36.8MB in the beginning and 34.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 17562.00ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 34.9MB in the beginning and 50.1MB in the end (delta: -15.2MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * TraceAbstraction took 41051.44ms. Allocated memory is still 71.3MB. Free memory was 49.5MB in the beginning and 29.3MB in the end (delta: 20.2MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * Witness Printer took 35.88ms. Allocated memory is still 71.3MB. Free memory was 29.3MB in the beginning and 24.6MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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 - PositiveResult [Line: 123]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 41.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 28.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 54 SdHoareTripleChecker+Valid, 27.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 895 SdHoareTripleChecker+Invalid, 27.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 203 IncrementalHoareTripleChecker+Unchecked, 581 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 314 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=6, InterpolantAutomatonStates: 52, 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, 10 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 121 HoareAnnotationTreeSize, 7 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 112 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 168 NumberOfCodeBlocks, 168 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 158 ConstructedInterpolants, 92 QuantifiedInterpolants, 1407 SizeOfPredicates, 62 NumberOfNonLiveVariables, 676 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 51]: Loop Invariant [2021-12-15 23:49:12,453 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-15 23:49:12,454 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,454 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,454 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,454 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,454 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,454 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,455 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,456 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-15 23:49:12,456 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,456 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,456 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,456 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,456 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,456 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~ix~0#1_18,QUANTIFIED] [2021-12-15 23:49:12,456 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,457 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,457 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] [2021-12-15 23:49:12,457 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15,QUANTIFIED] Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && (\exists v_ULTIMATE.start___ieee754_logf_~ix~0#1_18 : bv32, currentRoundingMode : FloatRoundingMode :: (~bvadd64(k, 127bv32) == ~bvashr32(v_ULTIMATE.start___ieee754_logf_~ix~0#1_18, 23bv32) && ~fp~LONGDOUBLE(v_ULTIMATE.start___ieee754_logf_~ix~0#1_18[31:31], v_ULTIMATE.start___ieee754_logf_~ix~0#1_18[30:23], v_ULTIMATE.start___ieee754_logf_~ix~0#1_18[22:0]) == ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0)) && i == ~bvand32(8388608bv32, ~bvadd64(~bvand32(8388607bv32, v_ULTIMATE.start___ieee754_logf_~ix~0#1_18), 4913952bv32)))) && zero_log == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE())) && (\exists v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15 : bv32 :: ~fp~LONGDOUBLE(unknown-#memory_int-unknown[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15][0bv32][31:31], unknown-#memory_int-unknown[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15][0bv32][30:23], unknown-#memory_int-unknown[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15][0bv32][22:0]) == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0) && ix == ~bvand32(8388607bv32, unknown-#memory_int-unknown[v_ULTIMATE.start___ieee754_logf_~#gf_u~0#1.base_15][0bv32])) - InvariantResult [Line: 100]: Loop Invariant [2021-12-15 23:49:12,457 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,458 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: zero_log == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE())) || aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == 0bv32 - InvariantResult [Line: 22]: Loop Invariant [2021-12-15 23:49:12,458 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,458 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: \result == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 103]: Loop Invariant [2021-12-15 23:49:12,458 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,459 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,459 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-12-15 23:49:12,459 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: zero_log == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE())) || aux-res == 0.0f && __signbit_float(res) == 0-aux) && (\exists currentRoundingMode : FloatRoundingMode :: x == ~to_fp~LONGDOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE())) - InvariantResult [Line: 26]: Loop Invariant [2021-12-15 23:49:12,459 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-12-15 23:49:12,459 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && zero_log == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~Pluszero~LONGDOUBLE())) && x == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0) - InvariantResult [Line: 112]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-12-15 23:49:12,582 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 Writing output log to file Ultimate.log Result: TRUE