./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-benchs/zonotope_loose.c.v+cfa-reducer.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 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:41:49,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:41:49,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:41:49,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:41:49,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:41:49,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:41:49,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:41:49,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:41:49,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:41:49,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:41:49,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:41:49,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:41:49,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:41:49,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:41:49,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:41:49,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:41:49,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:41:49,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:41:49,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:41:49,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:41:49,298 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:41:49,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:41:49,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:41:49,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:41:49,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:41:49,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:41:49,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:41:49,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:41:49,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:41:49,310 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:41:49,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:41:49,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:41:49,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:41:49,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:41:49,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:41:49,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:41:49,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:41:49,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:41:49,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:41:49,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:41:49,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:41:49,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:41:49,320 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 02:41:49,347 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:41:49,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:41:49,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:41:49,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:41:49,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:41:49,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:41:49,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:41:49,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:41:49,350 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:41:49,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:41:49,351 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:41:49,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 02:41:49,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:41:49,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:41:49,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:41:49,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:41:49,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:41:49,352 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:41:49,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:41:49,352 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:41:49,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:41:49,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:41:49,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:41:49,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:41:49,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:41:49,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:41:49,354 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:41:49,354 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:41:49,355 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 02:41:49,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 02:41:49,355 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:41:49,355 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:41:49,355 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:41:49,356 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 [2022-07-12 02:41:49,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:41:49,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:41:49,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:41:49,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:41:49,596 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:41:49,597 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2022-07-12 02:41:49,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8e6bb4b1/613ba154dcf5457c815106b344d9d40d/FLAG6d32cad87 [2022-07-12 02:41:50,091 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:41:50,093 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2022-07-12 02:41:50,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8e6bb4b1/613ba154dcf5457c815106b344d9d40d/FLAG6d32cad87 [2022-07-12 02:41:50,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8e6bb4b1/613ba154dcf5457c815106b344d9d40d [2022-07-12 02:41:50,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:41:50,122 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:41:50,123 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:41:50,123 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:41:50,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:41:50,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c01cead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50, skipping insertion in model container [2022-07-12 02:41:50,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:41:50,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:41:50,347 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-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2022-07-12 02:41:50,353 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:41:50,360 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:41:50,379 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-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2022-07-12 02:41:50,382 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:41:50,394 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:41:50,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50 WrapperNode [2022-07-12 02:41:50,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:41:50,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:41:50,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:41:50,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:41:50,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,423 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-07-12 02:41:50,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:41:50,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:41:50,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:41:50,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:41:50,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:41:50,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:41:50,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:41:50,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:41:50,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (1/1) ... [2022-07-12 02:41:50,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:41:50,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:41:50,492 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) [2022-07-12 02:41:50,513 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 [2022-07-12 02:41:50,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:41:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 02:41:50,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:41:50,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:41:50,576 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:41:50,577 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:41:50,680 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:41:50,685 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:41:50,687 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:41:50,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:41:50 BoogieIcfgContainer [2022-07-12 02:41:50,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:41:50,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:41:50,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:41:50,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:41:50,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:41:50" (1/3) ... [2022-07-12 02:41:50,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a58fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:41:50, skipping insertion in model container [2022-07-12 02:41:50,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:50" (2/3) ... [2022-07-12 02:41:50,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a58fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:41:50, skipping insertion in model container [2022-07-12 02:41:50,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:41:50" (3/3) ... [2022-07-12 02:41:50,698 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2022-07-12 02:41:50,709 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:41:50,709 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:41:50,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:41:50,770 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28cd0e09, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c12f58b [2022-07-12 02:41:50,771 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:41:50,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:41:50,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 02:41:50,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:41:50,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:41:50,784 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:41:50,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:41:50,791 INFO L85 PathProgramCache]: Analyzing trace with hash 570602568, now seen corresponding path program 1 times [2022-07-12 02:41:50,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:41:50,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588901704] [2022-07-12 02:41:50,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:41:50,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:41:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:41:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:41:50,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 02:41:50,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588901704] [2022-07-12 02:41:50,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588901704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:41:50,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:41:51,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 02:41:51,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427127779] [2022-07-12 02:41:51,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:41:51,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 02:41:51,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 02:41:51,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 02:41:51,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 02:41:51,061 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 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 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2022-07-12 02:41:51,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:41:51,144 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2022-07-12 02:41:51,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 02:41:51,147 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 [2022-07-12 02:41:51,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:41:51,153 INFO L225 Difference]: With dead ends: 30 [2022-07-12 02:41:51,153 INFO L226 Difference]: Without dead ends: 14 [2022-07-12 02:41:51,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 02:41:51,161 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 02:41:51,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 59 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 02:41:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-12 02:41:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-12 02:41:51,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:41:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-07-12 02:41:51,189 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2022-07-12 02:41:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:41:51,189 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-07-12 02:41:51,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2022-07-12 02:41:51,191 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-07-12 02:41:51,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 02:41:51,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:41:51,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:41:51,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 02:41:51,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:41:51,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:41:51,193 INFO L85 PathProgramCache]: Analyzing trace with hash 587613229, now seen corresponding path program 1 times [2022-07-12 02:41:51,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:41:51,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781376180] [2022-07-12 02:41:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:41:51,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:41:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:41:51,218 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:41:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:41:51,258 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 02:41:51,259 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:41:51,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:41:51,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 02:41:51,265 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 02:41:51,270 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:41:51,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:41:51 BoogieIcfgContainer [2022-07-12 02:41:51,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:41:51,299 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:41:51,299 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:41:51,299 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:41:51,299 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:41:50" (3/4) ... [2022-07-12 02:41:51,302 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 02:41:51,302 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:41:51,303 INFO L158 Benchmark]: Toolchain (without parser) took 1180.64ms. Allocated memory was 83.9MB in the beginning and 115.3MB in the end (delta: 31.5MB). Free memory was 46.3MB in the beginning and 51.9MB in the end (delta: -5.6MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2022-07-12 02:41:51,303 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:41:51,306 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.62ms. Allocated memory was 83.9MB in the beginning and 115.3MB in the end (delta: 31.5MB). Free memory was 46.1MB in the beginning and 90.4MB in the end (delta: -44.3MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2022-07-12 02:41:51,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.90ms. Allocated memory is still 115.3MB. Free memory was 90.3MB in the beginning and 88.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:41:51,309 INFO L158 Benchmark]: Boogie Preprocessor took 30.19ms. Allocated memory is still 115.3MB. Free memory was 88.9MB in the beginning and 87.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:41:51,309 INFO L158 Benchmark]: RCFGBuilder took 232.95ms. Allocated memory is still 115.3MB. Free memory was 87.5MB in the beginning and 78.3MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:41:51,310 INFO L158 Benchmark]: TraceAbstraction took 606.94ms. Allocated memory is still 115.3MB. Free memory was 77.7MB in the beginning and 52.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-12 02:41:51,310 INFO L158 Benchmark]: Witness Printer took 3.25ms. Allocated memory is still 115.3MB. Free memory was 52.5MB in the beginning and 51.9MB in the end (delta: 641.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:41:51,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.62ms. Allocated memory was 83.9MB in the beginning and 115.3MB in the end (delta: 31.5MB). Free memory was 46.1MB in the beginning and 90.4MB in the end (delta: -44.3MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.90ms. Allocated memory is still 115.3MB. Free memory was 90.3MB in the beginning and 88.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.19ms. Allocated memory is still 115.3MB. Free memory was 88.9MB in the beginning and 87.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 232.95ms. Allocated memory is still 115.3MB. Free memory was 87.5MB in the beginning and 78.3MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 606.94ms. Allocated memory is still 115.3MB. Free memory was 77.7MB in the beginning and 52.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.25ms. Allocated memory is still 115.3MB. Free memory was 52.5MB in the beginning and 51.9MB in the end (delta: 641.9kB). 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: 45]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L1] int __return_main; [L12] int __return_76; VAL [__return_76=0, __return_main=0] [L15] double main__x; [L16] double main__y; [L17] main__x = __VERIFIER_nondet_double() [L18] int main____CPAchecker_TMP_0; VAL [__return_76=0, __return_main=0] [L19] COND TRUE main__x >= 0.0 VAL [__return_76=0, __return_main=0] [L21] COND TRUE main__x <= 10.0 [L23] main____CPAchecker_TMP_0 = 1 VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L24] COND TRUE main____CPAchecker_TMP_0 != 0 [L26] main__y = (main__x * main__x) - main__x VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L27] COND FALSE !(main__y >= 0) [L69] main__y = (main__x * main__x) + 2.0 VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L31] int main____CPAchecker_TMP_1; VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L32] COND FALSE !(main__y >= 0.0) VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1] [L58] main____CPAchecker_TMP_1 = 0 VAL [__return_76=0, __return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L39] int __tmp_1; [L40] __tmp_1 = main____CPAchecker_TMP_1 [L41] int __VERIFIER_assert__cond; [L42] __VERIFIER_assert__cond = __tmp_1 VAL [__return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L43] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] [L45] reach_error() VAL [__return_76=0, __return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 59 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 20 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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 [2022-07-12 02:41:51,360 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-benchs/zonotope_loose.c.v+cfa-reducer.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 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:41:53,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:41:53,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:41:53,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:41:53,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:41:53,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:41:53,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:41:53,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:41:53,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:41:53,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:41:53,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:41:53,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:41:53,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:41:53,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:41:53,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:41:53,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:41:53,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:41:53,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:41:53,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:41:53,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:41:53,620 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:41:53,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:41:53,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:41:53,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:41:53,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:41:53,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:41:53,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:41:53,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:41:53,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:41:53,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:41:53,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:41:53,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:41:53,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:41:53,636 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:41:53,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:41:53,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:41:53,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:41:53,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:41:53,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:41:53,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:41:53,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:41:53,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:41:53,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 02:41:53,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:41:53,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:41:53,682 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:41:53,682 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:41:53,683 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:41:53,683 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:41:53,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:41:53,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:41:53,684 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:41:53,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:41:53,685 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:41:53,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:41:53,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:41:53,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:41:53,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:41:53,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:41:53,687 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 02:41:53,687 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 02:41:53,687 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 02:41:53,687 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:41:53,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:41:53,688 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:41:53,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:41:53,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:41:53,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:41:53,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:41:53,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:41:53,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:41:53,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:41:53,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:41:53,690 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 02:41:53,690 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 02:41:53,690 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:41:53,690 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:41:53,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:41:53,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 02:41:53,691 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 [2022-07-12 02:41:54,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:41:54,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:41:54,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:41:54,055 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:41:54,056 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:41:54,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2022-07-12 02:41:54,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d1538f4f/67d5444775b14d94b5faef141389ba60/FLAG0037ef382 [2022-07-12 02:41:54,494 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:41:54,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2022-07-12 02:41:54,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d1538f4f/67d5444775b14d94b5faef141389ba60/FLAG0037ef382 [2022-07-12 02:41:54,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d1538f4f/67d5444775b14d94b5faef141389ba60 [2022-07-12 02:41:54,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:41:54,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:41:54,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:41:54,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:41:54,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:41:54,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:41:54" (1/1) ... [2022-07-12 02:41:54,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:54, skipping insertion in model container [2022-07-12 02:41:54,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:41:54" (1/1) ... [2022-07-12 02:41:54,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:41:54,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:41:55,100 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-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2022-07-12 02:41:55,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:41:55,117 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:41:55,156 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-benchs/zonotope_loose.c.v+cfa-reducer.c[1094,1107] [2022-07-12 02:41:55,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:41:55,171 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:41:55,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55 WrapperNode [2022-07-12 02:41:55,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:41:55,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:41:55,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:41:55,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:41:55,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (1/1) ... [2022-07-12 02:41:55,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (1/1) ... [2022-07-12 02:41:55,230 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-07-12 02:41:55,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:41:55,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:41:55,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:41:55,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:41:55,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (1/1) ... [2022-07-12 02:41:55,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (1/1) ... [2022-07-12 02:41:55,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (1/1) ... [2022-07-12 02:41:55,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (1/1) ... [2022-07-12 02:41:55,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (1/1) ... [2022-07-12 02:41:55,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (1/1) ... [2022-07-12 02:41:55,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (1/1) ... [2022-07-12 02:41:55,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:41:55,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:41:55,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:41:55,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:41:55,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (1/1) ... [2022-07-12 02:41:55,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:41:55,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:41:55,301 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) [2022-07-12 02:41:55,309 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 [2022-07-12 02:41:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:41:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 02:41:55,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:41:55,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:41:55,395 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:41:55,397 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:41:56,476 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:41:56,481 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:41:56,481 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:41:56,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:41:56 BoogieIcfgContainer [2022-07-12 02:41:56,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:41:56,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:41:56,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:41:56,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:41:56,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:41:54" (1/3) ... [2022-07-12 02:41:56,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f99ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:41:56, skipping insertion in model container [2022-07-12 02:41:56,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:41:55" (2/3) ... [2022-07-12 02:41:56,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f99ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:41:56, skipping insertion in model container [2022-07-12 02:41:56,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:41:56" (3/3) ... [2022-07-12 02:41:56,516 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2022-07-12 02:41:56,534 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:41:56,535 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:41:56,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:41:56,581 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e97768b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@59a402ae [2022-07-12 02:41:56,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:41:56,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:41:56,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 02:41:56,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:41:56,595 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:41:56,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:41:56,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:41:56,598 INFO L85 PathProgramCache]: Analyzing trace with hash 570602568, now seen corresponding path program 1 times [2022-07-12 02:41:56,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:41:56,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410758431] [2022-07-12 02:41:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:41:56,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:41:56,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:41:56,612 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) [2022-07-12 02:41:56,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 02:41:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:41:56,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 02:41:57,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:41:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:41:57,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:41:57,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:41:57,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410758431] [2022-07-12 02:41:57,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410758431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:41:57,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:41:57,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 02:41:57,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258795686] [2022-07-12 02:41:57,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:41:57,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 02:41:57,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:41:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 02:41:57,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 02:41:57,145 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 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 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) [2022-07-12 02:41:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:41:57,221 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-07-12 02:41:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 02:41:57,223 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 [2022-07-12 02:41:57,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:41:57,228 INFO L225 Difference]: With dead ends: 27 [2022-07-12 02:41:57,229 INFO L226 Difference]: Without dead ends: 14 [2022-07-12 02:41:57,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 02:41:57,233 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 02:41:57,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 02:41:57,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-12 02:41:57,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-12 02:41:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:41:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-07-12 02:41:57,254 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2022-07-12 02:41:57,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:41:57,254 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-07-12 02:41:57,254 INFO L496 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) [2022-07-12 02:41:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-07-12 02:41:57,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 02:41:57,255 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:41:57,255 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:41:57,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 02:41:57,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:41:57,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:41:57,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:41:57,460 INFO L85 PathProgramCache]: Analyzing trace with hash 587613229, now seen corresponding path program 1 times [2022-07-12 02:41:57,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:41:57,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393738228] [2022-07-12 02:41:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:41:57,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:41:57,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:41:57,463 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) [2022-07-12 02:41:57,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 02:41:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:41:57,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 02:41:57,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:42:07,797 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) is different from true [2022-07-12 02:42:29,678 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) is different from false [2022-07-12 02:42:31,709 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (_ +zero 11 53))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) is different from true [2022-07-12 02:43:12,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:43:12,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:43:12,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:43:12,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393738228] [2022-07-12 02:43:12,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393738228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:43:12,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:43:12,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 02:43:12,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016815632] [2022-07-12 02:43:12,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:43:12,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 02:43:12,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:43:12,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 02:43:12,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=11, Unknown=3, NotChecked=14, Total=42 [2022-07-12 02:43:12,575 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2022-07-12 02:43:13,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 02:43:15,912 WARN L833 $PredicateComparison]: unable to prove that (and (fp.geq |c_ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 10.0)))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq |c_ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0))) is different from false [2022-07-12 02:43:16,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:43:16,440 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-07-12 02:43:16,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 02:43:16,441 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 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 [2022-07-12 02:43:16,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:43:16,442 INFO L225 Difference]: With dead ends: 27 [2022-07-12 02:43:16,442 INFO L226 Difference]: Without dead ends: 22 [2022-07-12 02:43:16,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=16, Invalid=12, Unknown=4, NotChecked=24, Total=56 [2022-07-12 02:43:16,443 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 02:43:16,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 15 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 37 Unchecked, 1.8s Time] [2022-07-12 02:43:16,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-12 02:43:16,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2022-07-12 02:43:16,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:43:16,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-07-12 02:43:16,448 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2022-07-12 02:43:16,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:43:16,448 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-07-12 02:43:16,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 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) [2022-07-12 02:43:16,448 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-07-12 02:43:16,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-12 02:43:16,448 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:43:16,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:43:16,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 02:43:16,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:43:16,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:43:16,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:43:16,652 INFO L85 PathProgramCache]: Analyzing trace with hash -125142316, now seen corresponding path program 1 times [2022-07-12 02:43:16,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:43:16,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598100763] [2022-07-12 02:43:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:43:16,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:43:16,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:43:16,655 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) [2022-07-12 02:43:16,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 02:43:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:43:16,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 02:43:16,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:43:26,436 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (= (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) |c_ULTIMATE.start_main_~main__y~0#1|))) is different from true [2022-07-12 02:43:45,352 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))))) is different from false [2022-07-12 02:43:47,444 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (and (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (not (fp.geq (fp.div currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) currentRoundingMode 10.0)) (_ +zero 11 53))))) is different from true [2022-07-12 02:44:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:44:19,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:44:19,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:44:19,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598100763] [2022-07-12 02:44:19,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598100763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:44:19,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:44:19,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 02:44:19,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200916514] [2022-07-12 02:44:19,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:44:19,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 02:44:19,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:44:19,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 02:44:19,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2022-07-12 02:44:19,329 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2022-07-12 02:44:21,668 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 [] [2022-07-12 02:44:24,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 02:44:24,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:44:24,066 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-07-12 02:44:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 02:44:24,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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 [2022-07-12 02:44:24,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:44:24,196 INFO L225 Difference]: With dead ends: 21 [2022-07-12 02:44:24,197 INFO L226 Difference]: Without dead ends: 16 [2022-07-12 02:44:24,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=7, Invalid=4, Unknown=3, NotChecked=6, Total=20 [2022-07-12 02:44:24,198 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-12 02:44:24,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 2 Unknown, 25 Unchecked, 4.7s Time] [2022-07-12 02:44:24,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-12 02:44:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2022-07-12 02:44:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:44:24,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-07-12 02:44:24,203 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-07-12 02:44:24,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:44:24,203 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-07-12 02:44:24,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 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) [2022-07-12 02:44:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-07-12 02:44:24,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 02:44:24,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:44:24,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:44:24,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-12 02:44:24,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:44:24,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:44:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:44:24,408 INFO L85 PathProgramCache]: Analyzing trace with hash 519293970, now seen corresponding path program 1 times [2022-07-12 02:44:24,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:44:24,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152875769] [2022-07-12 02:44:24,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:44:24,408 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:44:24,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:44:24,410 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) [2022-07-12 02:44:24,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-12 02:44:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:44:24,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 02:44:24,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:44:52,033 WARN L233 SmtUtils]: Spent 12.33s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 02:45:10,813 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.geq |ULTIMATE.start_main_~main__x~0#1| (_ +zero 11 53)) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 02:45:41,777 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.mul c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| |ULTIMATE.start_main_~main__x~0#1|))) (and (not (fp.geq (fp.sub c_currentRoundingMode .cse0 |ULTIMATE.start_main_~main__x~0#1|) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode 2.0)) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| ((_ to_fp 11 53) c_currentRoundingMode 10.0))))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 02:45:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:45:42,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:45:42,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:45:42,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152875769] [2022-07-12 02:45:42,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152875769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:45:42,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:45:42,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 02:45:42,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969201272] [2022-07-12 02:45:42,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:45:42,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 02:45:42,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:45:42,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 02:45:42,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=17, Unknown=2, NotChecked=18, Total=56 [2022-07-12 02:45:42,943 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:45:46,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 02:45:48,822 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.55s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-12 02:45:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:45:48,995 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2022-07-12 02:45:48,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 02:45:48,996 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-07-12 02:45:48,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:45:48,997 INFO L225 Difference]: With dead ends: 22 [2022-07-12 02:45:48,997 INFO L226 Difference]: Without dead ends: 14 [2022-07-12 02:45:48,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=19, Invalid=17, Unknown=2, NotChecked=18, Total=56 [2022-07-12 02:45:48,998 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-12 02:45:48,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 14 Unchecked, 6.0s Time] [2022-07-12 02:45:48,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-12 02:45:49,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-12 02:45:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:45:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2022-07-12 02:45:49,001 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2022-07-12 02:45:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:45:49,001 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2022-07-12 02:45:49,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:45:49,001 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2022-07-12 02:45:49,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-07-12 02:45:49,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:45:49,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:45:49,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-07-12 02:45:49,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:45:49,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:45:49,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:45:49,204 INFO L85 PathProgramCache]: Analyzing trace with hash -101291445, now seen corresponding path program 1 times [2022-07-12 02:45:49,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:45:49,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088049197] [2022-07-12 02:45:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:45:49,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:45:49,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:45:49,206 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) [2022-07-12 02:45:49,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-12 02:45:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:45:49,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 02:45:49,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:45:59,796 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse0) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 02:46:17,689 WARN L833 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 10.0))) (and (= (fp.div c_currentRoundingMode |ULTIMATE.start_main_~main__x~0#1| .cse0) |c_ULTIMATE.start_main_~main__y~0#1|) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse0)))) (fp.geq |c_ULTIMATE.start_main_~main__y~0#1| (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2022-07-12 02:46:34,652 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (let ((.cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| .cse1))) (and (fp.geq .cse0 (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))))) is different from false [2022-07-12 02:46:36,763 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~main__x~0#1| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 10.0))) (let ((.cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~main__x~0#1| .cse1))) (and (fp.geq .cse0 (_ +zero 11 53)) (not (fp.leq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 105.0))) (fp.leq |ULTIMATE.start_main_~main__x~0#1| .cse1))))) is different from true