./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:17:17,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:17:17,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:17:17,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:17:17,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:17:17,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:17:17,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:17:17,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:17:17,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:17:17,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:17:17,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:17:17,471 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:17:17,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:17:17,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:17:17,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:17:17,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:17:17,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:17:17,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:17:17,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:17:17,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:17:17,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:17:17,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:17:17,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:17:17,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:17:17,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:17:17,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:17:17,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:17:17,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:17:17,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:17:17,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:17:17,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:17:17,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:17:17,491 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:17:17,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:17:17,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:17:17,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:17:17,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:17:17,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:17:17,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:17:17,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:17:17,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:17:17,496 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:17:17,521 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:17:17,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:17:17,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:17:17,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:17:17,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:17:17,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:17:17,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:17:17,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:17:17,524 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:17:17,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:17:17,525 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:17:17,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:17:17,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:17:17,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:17:17,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:17:17,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:17:17,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:17:17,526 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:17:17,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:17:17,526 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:17:17,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:17:17,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:17:17,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:17:17,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:17:17,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:17:17,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:17:17,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:17:17,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:17:17,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:17:17,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:17:17,528 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:17:17,528 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:17:17,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:17:17,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:17:17,529 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 [2021-12-14 13:17:17,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:17:17,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:17:17,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:17:17,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:17:17,761 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:17:17,762 INFO L432 ainManager$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 [2021-12-14 13:17:17,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9262ef990/92da2dd995824cb6b28080d496a89ea3/FLAG6530eb09c [2021-12-14 13:17:18,210 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:17:18,211 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2021-12-14 13:17:18,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9262ef990/92da2dd995824cb6b28080d496a89ea3/FLAG6530eb09c [2021-12-14 13:17:18,230 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9262ef990/92da2dd995824cb6b28080d496a89ea3 [2021-12-14 13:17:18,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:17:18,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:17:18,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:17:18,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:17:18,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:17:18,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ccd4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18, skipping insertion in model container [2021-12-14 13:17:18,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:17:18,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:17:18,414 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] [2021-12-14 13:17:18,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:17:18,424 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:17:18,438 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] [2021-12-14 13:17:18,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:17:18,450 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:17:18,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18 WrapperNode [2021-12-14 13:17:18,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:17:18,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:17:18,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:17:18,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:17:18,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,474 INFO L137 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2021-12-14 13:17:18,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:17:18,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:17:18,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:17:18,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:17:18,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,482 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,482 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,496 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:17:18,499 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:17:18,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:17:18,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:17:18,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (1/1) ... [2021-12-14 13:17:18,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:17:18,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:17:18,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 13:17:18,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 13:17:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:17:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:17:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:17:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:17:18,593 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:17:18,594 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:17:18,703 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:17:18,707 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:17:18,707 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 13:17:18,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:17:18 BoogieIcfgContainer [2021-12-14 13:17:18,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:17:18,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:17:18,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:17:18,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:17:18,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:17:18" (1/3) ... [2021-12-14 13:17:18,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:17:18, skipping insertion in model container [2021-12-14 13:17:18,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:18" (2/3) ... [2021-12-14 13:17:18,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:17:18, skipping insertion in model container [2021-12-14 13:17:18,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:17:18" (3/3) ... [2021-12-14 13:17:18,725 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2021-12-14 13:17:18,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:17:18,728 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:17:18,772 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:17:18,777 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 13:17:18,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:17:18,786 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) [2021-12-14 13:17:18,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 13:17:18,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:17:18,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:17:18,804 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:17:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:17:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash 570602568, now seen corresponding path program 1 times [2021-12-14 13:17:18,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:17:18,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228423596] [2021-12-14 13:17:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:17:18,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:17:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:17:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:17:18,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:17:18,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228423596] [2021-12-14 13:17:18,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228423596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:17:18,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:17:18,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 13:17:18,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877207462] [2021-12-14 13:17:18,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:17:18,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 13:17:18,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:17:18,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 13:17:19,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 13:17:19,002 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) [2021-12-14 13:17:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:17:19,057 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-12-14 13:17:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 13:17:19,059 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 [2021-12-14 13:17:19,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:17:19,064 INFO L225 Difference]: With dead ends: 30 [2021-12-14 13:17:19,064 INFO L226 Difference]: Without dead ends: 14 [2021-12-14 13:17:19,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 13:17:19,072 INFO L933 BasicCegarLoop]: 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 [2021-12-14 13:17:19,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 59 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:17:19,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-14 13:17:19,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-14 13:17:19,095 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) [2021-12-14 13:17:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-14 13:17:19,097 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-12-14 13:17:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:17:19,097 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-14 13:17:19,097 INFO L471 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) [2021-12-14 13:17:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-14 13:17:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 13:17:19,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:17:19,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:17:19,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:17:19,099 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:17:19,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:17:19,103 INFO L85 PathProgramCache]: Analyzing trace with hash 587613229, now seen corresponding path program 1 times [2021-12-14 13:17:19,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:17:19,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105335055] [2021-12-14 13:17:19,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:17:19,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:17:19,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:17:19,119 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 13:17:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:17:19,147 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 13:17:19,147 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 13:17:19,150 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 13:17:19,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 13:17:19,155 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 13:17:19,158 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 13:17:19,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:17:19 BoogieIcfgContainer [2021-12-14 13:17:19,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 13:17:19,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 13:17:19,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 13:17:19,178 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 13:17:19,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:17:18" (3/4) ... [2021-12-14 13:17:19,180 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 13:17:19,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 13:17:19,180 INFO L158 Benchmark]: Toolchain (without parser) took 945.54ms. Allocated memory is still 100.7MB. Free memory was 64.7MB in the beginning and 38.0MB in the end (delta: 26.7MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2021-12-14 13:17:19,181 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory was 70.0MB in the beginning and 70.0MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:17:19,181 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.81ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 75.2MB in the end (delta: -10.8MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2021-12-14 13:17:19,182 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.92ms. Allocated memory is still 100.7MB. Free memory was 75.2MB in the beginning and 73.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:17:19,184 INFO L158 Benchmark]: Boogie Preprocessor took 23.35ms. Allocated memory is still 100.7MB. Free memory was 73.6MB in the beginning and 72.8MB in the end (delta: 839.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:17:19,184 INFO L158 Benchmark]: RCFGBuilder took 209.54ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 64.0MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 13:17:19,186 INFO L158 Benchmark]: TraceAbstraction took 467.32ms. Allocated memory is still 100.7MB. Free memory was 63.6MB in the beginning and 38.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-14 13:17:19,186 INFO L158 Benchmark]: Witness Printer took 2.60ms. Allocated memory is still 100.7MB. Free memory is still 38.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:17:19,193 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 100.7MB. Free memory was 70.0MB in the beginning and 70.0MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.81ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 75.2MB in the end (delta: -10.8MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.92ms. Allocated memory is still 100.7MB. Free memory was 75.2MB in the beginning and 73.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.35ms. Allocated memory is still 100.7MB. Free memory was 73.6MB in the beginning and 72.8MB in the end (delta: 839.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 209.54ms. Allocated memory is still 100.7MB. Free memory was 72.8MB in the beginning and 64.0MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 467.32ms. Allocated memory is still 100.7MB. Free memory was 63.6MB in the beginning and 38.4MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.60ms. Allocated memory is still 100.7MB. Free memory is still 38.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 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, 0.0s 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 [2021-12-14 13:17:19,219 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:17:20,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:17:20,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:17:20,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:17:20,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:17:20,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:17:20,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:17:20,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:17:20,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:17:20,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:17:20,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:17:20,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:17:20,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:17:20,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:17:20,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:17:20,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:17:20,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:17:20,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:17:20,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:17:20,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:17:20,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:17:20,882 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:17:20,883 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:17:20,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:17:20,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:17:20,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:17:20,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:17:20,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:17:20,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:17:20,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:17:20,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:17:20,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:17:20,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:17:20,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:17:20,893 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:17:20,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:17:20,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:17:20,894 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:17:20,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:17:20,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:17:20,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:17:20,899 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 13:17:20,931 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:17:20,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:17:20,932 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:17:20,932 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:17:20,933 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:17:20,933 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:17:20,934 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:17:20,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:17:20,934 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:17:20,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:17:20,935 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:17:20,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:17:20,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:17:20,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:17:20,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:17:20,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:17:20,936 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 13:17:20,936 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 13:17:20,936 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 13:17:20,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:17:20,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:17:20,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:17:20,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:17:20,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:17:20,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:17:20,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:17:20,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:17:20,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:17:20,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:17:20,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:17:20,938 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 13:17:20,938 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 13:17:20,938 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:17:20,939 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:17:20,939 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:17:20,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:17:20,939 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 13:17:20,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f4aaad5467edb8ebb713201c5ef1a2ab973a56e3a4674058c8240617473ff22 [2021-12-14 13:17:21,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:17:21,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:17:21,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:17:21,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:17:21,223 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:17:21,224 INFO L432 ainManager$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 [2021-12-14 13:17:21,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc572aed3/4d15dcb9236a46cbb9fedcf2edf97d09/FLAG2b45ac009 [2021-12-14 13:17:21,651 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:17:21,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/zonotope_loose.c.v+cfa-reducer.c [2021-12-14 13:17:21,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc572aed3/4d15dcb9236a46cbb9fedcf2edf97d09/FLAG2b45ac009 [2021-12-14 13:17:21,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc572aed3/4d15dcb9236a46cbb9fedcf2edf97d09 [2021-12-14 13:17:21,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:17:21,668 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:17:21,669 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:17:21,670 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:17:21,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:17:21,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@116e072a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21, skipping insertion in model container [2021-12-14 13:17:21,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:17:21,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:17:21,788 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] [2021-12-14 13:17:21,792 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:17:21,800 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:17:21,815 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] [2021-12-14 13:17:21,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:17:21,843 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:17:21,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21 WrapperNode [2021-12-14 13:17:21,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:17:21,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:17:21,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:17:21,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:17:21,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,873 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-12-14 13:17:21,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:17:21,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:17:21,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:17:21,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:17:21,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:17:21,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:17:21,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:17:21,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:17:21,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (1/1) ... [2021-12-14 13:17:21,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:17:21,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:17:21,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 13:17:21,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 13:17:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:17:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 13:17:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:17:21,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:17:22,008 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:17:22,009 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:17:24,951 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:17:24,955 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:17:24,955 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 13:17:24,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:17:24 BoogieIcfgContainer [2021-12-14 13:17:24,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:17:24,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:17:24,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:17:24,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:17:24,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:17:21" (1/3) ... [2021-12-14 13:17:24,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1d47cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:17:24, skipping insertion in model container [2021-12-14 13:17:24,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:17:21" (2/3) ... [2021-12-14 13:17:24,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e1d47cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:17:24, skipping insertion in model container [2021-12-14 13:17:24,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:17:24" (3/3) ... [2021-12-14 13:17:24,974 INFO L111 eAbstractionObserver]: Analyzing ICFG zonotope_loose.c.v+cfa-reducer.c [2021-12-14 13:17:24,977 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:17:24,978 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:17:25,014 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:17:25,027 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 13:17:25,029 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:17:25,047 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) [2021-12-14 13:17:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 13:17:25,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:17:25,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:17:25,052 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:17:25,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:17:25,056 INFO L85 PathProgramCache]: Analyzing trace with hash 570602568, now seen corresponding path program 1 times [2021-12-14 13:17:25,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:17:25,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849114090] [2021-12-14 13:17:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:17:25,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:17:25,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:17:25,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 13:17:25,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 13:17:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:17:25,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 13:17:25,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:17:25,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:17:25,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:17:25,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:17:25,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849114090] [2021-12-14 13:17:25,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849114090] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:17:25,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:17:25,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 13:17:25,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732322620] [2021-12-14 13:17:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:17:25,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 13:17:25,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:17:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 13:17:25,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 13:17:25,544 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) [2021-12-14 13:17:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:17:25,617 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2021-12-14 13:17:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 13:17:25,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-14 13:17:25,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:17:25,623 INFO L225 Difference]: With dead ends: 27 [2021-12-14 13:17:25,624 INFO L226 Difference]: Without dead ends: 14 [2021-12-14 13:17:25,625 INFO L932 BasicCegarLoop]: 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 [2021-12-14 13:17:25,628 INFO L933 BasicCegarLoop]: 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 [2021-12-14 13:17:25,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 57 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:17:25,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-14 13:17:25,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-14 13:17:25,654 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) [2021-12-14 13:17:25,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-12-14 13:17:25,655 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-12-14 13:17:25,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:17:25,656 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-12-14 13:17:25,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:17:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-12-14 13:17:25,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-14 13:17:25,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:17:25,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:17:25,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-14 13:17:25,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:17:25,864 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:17:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:17:25,866 INFO L85 PathProgramCache]: Analyzing trace with hash 587613229, now seen corresponding path program 1 times [2021-12-14 13:17:25,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:17:25,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298592785] [2021-12-14 13:17:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:17:25,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:17:25,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:17:25,868 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 13:17:25,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 13:17:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:17:26,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 13:17:26,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:18:03,583 WARN L838 $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))))) is different from false [2021-12-14 13:18:05,613 WARN L860 $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))))) is different from true [2021-12-14 13:18:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:18:34,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:18:34,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:18:34,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298592785] [2021-12-14 13:18:34,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298592785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:18:34,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:18:34,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 13:18:34,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341928857] [2021-12-14 13:18:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:18:34,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 13:18:34,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:18:34,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 13:18:34,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=4, NotChecked=6, Total=30 [2021-12-14 13:18:34,213 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 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)